Nackenwärmer UYN Unisex Jugular Biomorph Collar Black - 2025/26

The most advanced neck warmer ever developed. Made from an exclusive blend of kapok, the world's lightest natural fibre, Biolight from beech wood, Natex from castor beans and Flexicorn from corn seeds. The result is extraordinary protection from the cold, powered by the new Isoduct technology that helps retain air and prevents heat loss. When raised above the mouth, the Biodry structure makes breathing easier. For high performance even in the middle of winter.

Fabric breathes in areas of high perspiration: In areas where perspiration is particularly intense, Biodry technology expels sweat through fine bio-fibres and allows the skin to breathe. The three-dimensional structure is developed by studying skin respiration in amphibians. In these cold-blooded animals, the skin is thin, highly vascularised and has numerous folds to increase surface area.

Retains heat and turns it into energy: Isoduct technology targets those areas of the body that tend to cool quickly. Channels integrated in the fabric retain air in contact with the skin, so it warms up through body heat and creates a protective layer to the outside. The principle of Isoduct technology is inspired by the fur of arctic animals. The hairs create pockets that trap air, which is the most powerful insulator in nature, and protect against the cold.

Support and flexibility from wing veins: Inspired by the veins of insect wings, this ultra-light and flexible 'exoskeleton' provides targeted support in all areas of the body that need it, while at the same time connecting the functional zones. Insect wings are extremely powerful in relation to their weight. The intricate pattern of veins defines their functionality and distinguishes insect types from each other.

Beech fibre, durable and breathable: BIOLIGHT is a plant-based fibre that gives UYN garments unique characteristics. Derived from the cellulose of beech plants, this fibre is smooth, soft and bright, and provides and extremely pleasant touch. BIOLIGHT is characterised by its breathable properties and its ability to retain moisture (twice as much as cotton). Thanks to its structure, BIOLIGHT fabric helps to keep the skin cool and dry. BOTANIC ORIGIN Extracted from the beech tree from responsibly managed forests 100% BIODEGRADABLE Born from nature, returns to nature SUPERIOR PERFORMANCE Retains twice as much moisture as cotton, is pleasantly soft and light.

The sustainable alternative to elastane: FLEXICORN is a plant-based bio-polyester. Extraordinarily elastic and resilient, it keeps its original shape longer, it is wrinkle resistant and UV-resistant. FLEXICORN has made it possible for us to replace synthetic elastane fibres with a recyclable, more sustainable and less polluting material. This innovative yarn is derived from corn which isn’t used for human consumption and glucose fermentation. With FLEXICORN we have reduced energy consumption, CO2 emissions and the impact of our products on the environment. FROM VEGETABLE INGREDIENTS FLEXICORN's polymer is produced using corn seeds, vegetable ingredients from renewable sources HIGHLY ELASTIC Due to the micro-zig-zag structure, it always bounces back to its original shape QUICK-DRYING The FLEXICORN fibre is breathable and increases the drying speed of the garment.

The vegetable wool: Nature never fails to amaze us. Nature gives us KAPOK, a precious and totally organic fibre obtained from the fruit of the Ceiba Pentandra, a sacred plant that grows up to 60 metres high, widespread in the rainforests of South America. Known as 'vegetable wool' for its extraordinary lightness, KAPOK fibre has only recently been used in the textile industry for padding cushions and mattresses. We at UYN were the first to succeed in using the natural yarn in sportswear - as a fabric with exceptional active properties and not as padding. THE WORLD' S LIGHTEST NATURAL FIBRE KAPOK is a hollow fibre composed of 80% air, with a very low density (0.35 g/cm3). Because of this, Kapok is the lightest natural fibre in the world. NATURALLY INSULATING The structure allows the KAPOK fibre to trap a large amount of body-warmed air thus creating an insulating barrier that protects against temperature changes. SOFT AND HYPOALLERGENIC High-quality and soft, it dries quickly, is hygroscopic and has natural antibacterial and hypoallergenic properties. TOTALLY ORGANIC KAPOK fibre grows wild in pristine forests, no intensive cultivation is required and the fiber is harvested by hand. No fertilizers or pesticides are used in its cultivation.

100 % NATURAL. 100 % FUNCTIONAL: NATEX is especially light and reduces the weight by 25%. NATEX garments dry up to 50% faster than comparable nylon clothing. The 100% organic fiber is more elastic and the bacteriostatic effect minimizes odors.