Remarkable swimwear with innovative textures and knits

Choosing a durable, high-performance, and environmentally friendly swimsuit no longer depends solely on style: fabric quality is crucial. Innovations in recycled, bio-based, biodegradable, and technological fibers have profoundly transformed the swimwear industry.

This article provides a structured overview of the main families of innovative fabrics, the most widely used standards in the sector, and a practical framework for comparing materials. It does not replace a full life cycle assessment (LCA) but is based on manufacturers' practices, textile standards, and recommendations from specialized organizations.

Key takeaways

• Recycled fibers like Econyl®, Seaqual®, or REPREVE® enable the valorization of plastic waste while offering performance comparable to virgin fibers.

• Plant-based and bio-sourced fabrics (organic cotton, linen, castor, algae) stand out for their comfort and biodegradability potential, even if they are better suited for leisure use than intensive swimming.

• Modern technological fabrics often combine chlorine resistance, UV protection, quick-drying properties, and compression effects for sports.

• Certifications (Oeko-Tex®, GOTS, Global Recycled Standard, Bluesign®) are essential benchmarks for verifying the absence of harmful substances and traceability.

• The actual durability of a swimsuit depends on the chosen fabric, the quality of manufacturing, and daily care.

How we evaluate an "innovative" fabric

To help compare materials, we can rely on four main evaluation axes:

• Mechanical performance: elasticity, recovery, abrasion, and chlorine resistance (typical tests: ISO 105-E03, ISO 12947, ISO 20932-1).

• Comfort & use: feel, breathability, drying, dimensional stability after washing.

• Environmental impact: proportion of recycled or bio-based material, presence of certifications, end-of-life recycling possibilities.

• Traceability & reliability: clarity on fiber origin, compliance with recognized labels, manufacturer transparency.

In the following sections, these criteria serve as a guiding principle for analyzing different types of innovative swimwear fabrics.

Types of innovative fabrics

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Recycled fabrics

Recycled fibers are now at the heart of many "responsible" swimwear collections. They transform post-consumer waste (bottles, used textiles) or post-industrial waste (fishing nets, production scraps) into nylon or polyester yarns usable in swimwear knitwear.

Some common examples:

• Econyl®: regenerated nylon derived from fishing nets, carpets, and other polyamide waste.

• Seaqual®: recycled polyester incorporating a portion of marine waste collected through dedicated programs.

• REPREVE®: recycled polyester fibers made from post-consumer plastic bottles, with enhanced traceability.

• Generic recycled nylon: polyamides derived from industrial waste reprocessed into granules and then filaments.

• Amni Soul Eco® Thread: polyamide designed for accelerated biodegradation under controlled landfill conditions, while remaining stable in use.

Technically, these fabrics can aim for the same standards as their virgin equivalents:

• Chlorine resistance: tested according to ISO 105-E03, with series of exposures in chlorinated baths to verify color fastness and elasticity.

• Colorfastness: controlled via light tests (ISO 105-B02) and washing tests (ISO 105-C06).

• Abrasion resistance: evaluated by Martindale-type tests (ISO 12947).

In practice, a well-formulated and properly knitted recycled fabric can offer a lifespan very close to that of a classic fabric, provided that the cut and finishes are of the same quality level.

Plant-based fabrics

Plant-based fabrics (cotton, linen, castor fibers, etc.) appeal to brands that want to offer swimsuits that are more "textile," closer to the ready-to-wear universe. They provide a natural feel, good breathability, and biodegradability potential.

Frequently encountered examples:

• GOTS certified organic cotton: controlled cultivation, limitation of chemical inputs, traceability of the fiber from raw material to garment.

• European linen: local fiber in some markets, often valued for its low irrigation needs.

• Bio-based fibers (castor, corn, algae) mixed with synthetic fibers to improve comfort or reduce the proportion of petroleum.

However, these materials generally exhibit:

• More limited chlorine resistance than technical polyamides or polyesters.

• A longer drying time, unless mixed with hydrophobic fibers.

• Less elasticity, often compensated by a higher percentage of elastane.

Biodegradable fabrics

Biodegradability aims to reduce the end-of-life impact of the swimsuit. We distinguish:

• Natural fibers (cotton, linen) capable of decomposing under suitable conditions.

• Certain "improved" polyamides, designed to degrade faster in anaerobic environments (controlled landfills).

However, the concept of biodegradability remains regulated: the exact durations and conditions vary according to tests, and manufacturers' claims must be read with caution. From an environmental perspective, extending the useful life of the swimsuit remains one of the most effective levers.

A biodegradable fabric does not negate the need for careful maintenance: the longer the swimsuit lasts, the lower the impact per year of use.

Technological fabrics

So-called "technological" fabrics bring together a set of properties aimed at performance: muscle support, hydrodynamics, quick-drying, UV protection, and even sensor integration.

Here is a table showing some major innovations:

Polyamide or polyester-based blends with elasticity (Lycra®, elastane) remain the basis of most technical swimsuits, with a compromise between support, comfort, and longevity.

Benefits for the user

Performance and support

For regular swimming or sports practice, innovative fabrics seek a balance between support and freedom of movement. Polyamide or recycled polyester knits, combined with a percentage of elastane, are designed to:

• hug the silhouette without creating excessive compression zones;

• remain stable after stretching, with good recovery measured according to ISO 20932-1;

• withstand repeated movements (crawl, breaststroke, backstroke, butterfly) without premature slackening.

Denser compression fabrics are more suited for experienced swimmers or competition use, where hydrodynamics takes precedence over very supple comfort.

Comfort and elasticity

Comfort depends on the yarn formulation, knitting, and lining. Several trends emerge:

• Polyester / Lycra® and polyamide / elastane blends generally offer multi-directional elasticity with good shape retention.

• Fabrics containing a significant amount of elastane maintain their comfortable fit after many uses, as long as exposure to chlorine and high temperatures remains controlled.

• Intermediate grammages (neither too thin nor too thick) are often preferred to avoid transparency while remaining pleasant to wear.

For sensitive skin, the presence of flat seams, soft linings, and the absence of aggressive finishes are as important as the choice of the fiber itself.

UV protection and chlorine resistance

Many swimsuit fabrics are tested according to AS/NZS 4399 protocols to determine their UV protection factor (UPF). A UPF 50+ level means the fabric allows less than 2% of UV rays to pass through under test conditions.

In parallel, chlorine resistance is often evaluated through repeated immersions in chlorinated baths, followed by measurements of color change and elasticity (e.g., according to ISO 105-E03). Fabrics specifically "chlorine-resistant" better retain their appearance and support over time.

Quick-drying

Synthetic fibers like polyamide and polyester are naturally hydrophobic: they absorb little water and release it quickly. Drying speed also depends on:

• the weight of the fabric (a lighter fabric retains less water);

• the knit density (the more aerated the knit, the easier evaporation is);

• the possible presence of hydrophobic finishes.

In daily use, this translates to a swimsuit that transitions faster from wet to an acceptable level of comfort, which is appreciated for days alternating between swimming and time out of the water.

In summary, the combination of "hydrophobic fabric + controlled grammage + well-fitted cut" contributes more to comfort than a single isolated criterion.

Environmental impact

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Reduction of carbon footprint

Recycled fibers aim to reduce dependence on fossil resources and valorize existing waste. Manufacturers generally communicate reductions in CO2 emissions and energy consumption compared to virgin fiber production, based on their internal assessments or specific LCAs.

However, the actual impact depends on the entire chain (collection, regeneration, knitting, manufacturing, transport). To interpret the announced figures, it is recommended to check:

• if the data comes from published analyses or detailed technical sheets;

• if the methodology (e.g., LCA) is described;

• if the scope studied (from yarn to finished product) is clearly specified.

Recyclability and circular economy

Innovative swimwear fabrics are increasingly part of a circular economy approach:

• establishment of collection and regeneration programs for fishing nets and used textiles;

• development of certified recycled yarns, allowing for material traceability;

• exploration of end-of-life recycling for single-material swimsuits (e.g., 100% polyamide or 100% polyester, excluding elastane).

In practice, swimsuit recycling remains complex due to fiber blends and accessories (elastics, linings, fasteners). Material lightening, increased recycled content, and improved durability remain concrete short-term levers.

Ecological certifications

Labels do not guarantee everything, but they are useful indicators for comparing alternatives. Among the most common:

• Oeko-Tex Standard 100: controls the presence of undesirable substances in the finished product.

• GOTS (Global Organic Textile Standard): regulates organic natural fibers, as well as the environmental and social aspects of the production chain.

• Bluesign®: focuses on processes, chemical management, and worker safety.

• Global Recycled Standard (GRS): verifies the proportion of recycled material and associated traceability.

When purchasing, checking these logos on the label or in the product sheet helps distinguish a marketing claim from a truly audited approach.

Innovative brands and collections

Pioneering brands

Several brands positioned themselves early on the use of recycled or innovative fabrics for swimwear and communicate in detail about their material choices.

• Gili’s transforms plastic bottles and used clothing into recycled polyester, with initiatives to take back old swimsuits.

• Les Ultraviolettes offers a collection in recycled polyamide, integrating materials like Econyl® or Q-Nova® with detailed communication on certifications.

These examples illustrate how brands can combine material innovation, transparency, and ecological positioning.

Sustainable collections

Many "sustainability-oriented" collections rely on recycled fibers and controlled production locations.

• Recycled fibers can come from plastic bottles or recovered fishing nets.

• Regenerated nylon (like Econyl®) allows for knits very similar to classic polyamides, with a different material impact.

• Textiles of plant origin (castor, corn, algae) are sometimes used in blends to reduce the proportion of fossil resources.

Some examples of positioning:

• Hopaal highlights swimsuits made from recycled plastic bottles, with a quantified tracking of CO2 savings.

• Maline manufactures in France with OEKO-TEX® certified recycled polyamide.

• Brava Fabrics offers recycled polyester swim shorts with original prints.

• Luz combines recycled cotton and Econyl® in graphic cuts.

• Réelle Paris prioritizes recycled fibers and European production.

• Les Sirènes focuses on sustainable materials and responsible production in Portugal.

The important thing for consumers is to verify, beyond slogans, the presence of certifications, detailed material sheets, and, where possible, documented customer feedback.

Local initiatives

Local initiatives (workshops, small series, short supply chains) also play a role in the sector's transition:

• Reduction of transport distances and valorization of regional know-how.

• Possibility to better control production conditions.

• Faster adaptation to material innovations, especially for testing new fabrics in small quantities.

Choosing a locally designed and manufactured swimsuit does not alone guarantee perfect performance or environmental footprint, but it contributes to a more coherent and traceable approach.

Trends and future of innovative swimwear fabrics

Evolving expectations

Consumers now expect swimsuits that are high-performing, comfortable, and better documented environmentally. Questions of traceability, recyclability, and manufacturing conditions are increasingly frequent at the time of purchase.

• Innovative fabrics emphasize durability (resistance to chlorine, light, washing).

• Consumers are looking for eco-friendly and high-performing products, without sacrificing comfort.

• The demand for transparency pushes brands to detail their material and supplier choices more.

New technologies

Beyond the fibers themselves, shaping and personalization technologies are evolving:

• Optimized digital printing to limit dye excess.

• Prototyping and elements from 3D printing to adjust design and reduce waste.

• Experimental development of "connected" swimsuits for training monitoring.

These innovations are currently concentrated in niches, but they give an idea of the possible evolution of performance swimwear in the coming years.

Towards generalization

In the medium term, fabrics incorporating a share of recycled or certified material should become the norm rather than a separate segment. Regulatory constraints, consumer pressure, and resource challenges are pushing in this direction.

In this context, the role of brands is as much to choose relevant materials as it is to clearly explain their limitations and benefits, without unrealistic promises or greenwashing.

You can find more technical information on innovative swimwear materials on our dedicated page or delve deeper into the issues related to recycling surf swimsuits in this blog article.

Summary table: resources and durability

By supporting textile innovation and brands that clearly document their material choices and certifications, you contribute to a market evolution towards more ethical, transparent, and sustainable fashion.

FAQ

What are the advantages of innovative fabrics for swimsuits?

Innovative fabrics make it possible to combine several benefits in a single product: better chlorine resistance, quicker drying, UV protection, comfortable fit, and for some, reduced environmental impact thanks to recycled or bio-based material content.

The goal is not to create a "miracle" fabric, but to find the right compromise between actual use, comfort, and environmental consistency.

How to care for a swimsuit made of recycled fabric?

A few simple habits extend the lifespan of the fabric, whether recycled or not:

• Rinse the swimsuit with clear, cold water after each use (sea or pool).

• Avoid tumble drying and prefer flat drying in the shade.

• Use a mild detergent, without aggressive bleaching agents.

• Limit prolonged exposure to highly concentrated chlorine and abrasive surfaces.

Are innovative fabrics truly ecological?

A recycled or bio-based fabric can reduce certain impacts (raw material, waste management), but it does not make the product "neutral" for all that. The ecological footprint of a swimsuit also depends on its durability, frequency of use, place of production, and maintenance method.

To navigate this, it is useful to prioritize certified materials (Oeko-Tex®, GRS, GOTS, Bluesign® when available) and brands that publish clear information about their materials and factories.

How to recognize an ecologically certified swimsuit?

Labels are not mandatory, but their presence confirms that a third-party organization has audited at least part of the value chain. On product sheets, you frequently encounter:

Checking this information before purchase helps turn good intentions into truly informed choices.