Fabric

The Fabric

swimm is made from a 96% merino wool to 4% elastane blend, knitted for four-way stretch. Not pure wool — 100% wool is too heavy for swimwear and lacks the stretch needed for full movement in water. The small addition of elastane gives the fabric four-way stretch while preserving everything that makes merino exceptional: temperature regulation, odour resistance, and a soft, natural feel against skin.

Natural Performance Fibre

Merino wool is a renewable, biodegradable material that regulates temperature, manages moisture, and resists odour — making it exceptionally effective for swimwear.

Performance in Water

Temperature Regulation: Merino wool fibres regulate body temperature in warm and cool water. The fibre's crimp structure traps air for insulation when wet, while remaining breathable in warm conditions.

Quick-Drying & Moisture Management: Merino absorbs moisture readily while feeling dry to the touch. It wicks moisture away from skin and dries faster than cotton. The swimwear is fully lined with the same wool fabric for comfort and performance.

Odour Resistance: Merino wool contains lanolin and has a fibre structure that prevents bacteria growth — the cause of odour in swimwear. Your swimwear stays fresher longer, even after multiple wears.

Chlorine & Saltwater Resilient: swimm withstands pool chlorine, ocean salt, and spa chemicals while maintaining shape, softness, and performance.

UV Protection: Merino provides natural sun protection.

Soft & Non-Irritating: Superfine merino fibres are soft and gentle on skin, and suitable for sensitive skin.

Sauna & Spa Ready: Merino's natural moisture-wicking and temperature regulation make it ideal for saunas and steam rooms. The fibre stays comfortable against skin in high heat and humidity, while its odour resistance means it stays fresh even after extended sauna sessions.

Sourcing & Accreditations

The super fine, high quality wool is sourced from a RWS (Responsible Wool Standards) accredited farm with non-mulesed sheep, ensuring the highest standards of animal welfare and environmental responsibility. It is knitted by an Ethical Clothing Australia accredited bespoke textile mill.

The fabric is free of PFAS (per- and polyfluoroalkyl substances) forever chemicals. The dye is made using low toxic and low allergen dye accredited with OEKO-TEX.

Packaging

All packaging is 100% reusable, recyclable, biodegradable and compostable.

Why Avoid Synthetic Swimwear

Microplastic Pollution: Synthetic fabrics like polyester, nylon, and spandex shed thousands of microplastic fibres every time they're washed or worn in water. These microplastics pollute oceans, enter the food chain, and persist for hundreds of years.

Petroleum-Based & Non-Biodegradable: Synthetic fabrics are derived from fossil fuels and sit in landfill for centuries. Merino wool is a natural fibre that biodegrades completely and returns nutrients to soil.

Chemical Treatments: Synthetic swimwear is often treated with antimicrobial chemicals and finishes to combat odour and bacteria build-up. These can irritate skin and wash out over time.

Less Breathable: Synthetics trap heat and moisture against skin, creating a clammy feeling — especially problematic in swimwear worn for extended periods.

Sustainable & Renewable

Merino wool is a renewable resource that grows back each year. Choosing merino wool swimwear means a product that performs better, lasts longer, and has less environmental impact.

Durability

With proper care, merino wool swimwear maintains shape, elasticity, and performance season after season.