Uyn Men's Evolutyon Biotech Ls Top
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129.00 129.0 USD 129.00


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BIOTECH UNDERWEAR from UYN is technical apparel made using 100% biomaterials from nature, carefully selected and empowered via biotechnology for maximum performance. The ultimate meeting of nature, technology and sustainability.

Made in the USA

EVOLUTYON BIOTECH is the underwear shirt that marks a new era in functional apparel. Made using innovative biomaterials, without fossil fuel based synthetics, enhanced through UYN’s patented technologies, this shirt provides an extraordinary natural feel on the skin and the ideal support for your activities in medium to low temperatures. Thanks to the hollow structure of the kapok fibre, the lightest natural fibre in the world, EVOLUTYON BIOTECH effectively insulates the body and maintains the ideal micro climate. The elastic FLEXI CORN fibre from corn seeds promotes a perfect fit and unlimited freedom of movement.


  • HYPERMOTION: Zero seam shoulder construction, designed for maximum freedom of movement and enhanced muscle support
  • COOLVENT: The channelled inner surface promotes a constant flow of air. It quickly absorbs sweat, cools the body during activity and keeps the skin dry.
  • HEATMEMORY: The insulating air chambers of the HEATMEMORY technology protect the body against cooling down. This is especially important when your muscles cool down after the exercise phase. Your body stays warm and efficient.
  • RESIFIT: Knees and elbow joints are subject to high levels of stress during exercise. This is why these areas are enclosed with a three dimensional chamber system in order to create an insulating layer of air around the joints.
  • DRYLIGHT: Anywhere sweat accumulates during sport, the Drylight technology by UYN® ensures wearing comfort. Thanks to its more permeable, ultra absorbent knitting technique, moisture is quickly transported outwards.


  • KAPOK: Known as the vegetable wool, 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. High quality and soft, it dries quickly, is hygroscopic and has natural antibacterial and hypoallergenic properties.
  • FLEXICORN: A plant based bio polyester that is extraordinarily elastic and resilient, it keeps its original shape longer, is wrinkle resistant and UV resistant.
  • BIOLIGHT: 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 an 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.
  • ECOLYPT: The wood obtained from Eucalyptus trees becomes ECOLYPT, a 100% sustainable fiber with exceptional properties. The characteristics of the pulp of the wood, from which it is obtained, give ECOLYPT strength and great elasticity. Its structure is composed of very small hydrophilic fibers that absorb up to 50% more moisture than cotton. In addition, the fiber is highly breathable, minimizes the
    formation of odors and thanks to its temperature regulating properties is able to provide a cooling effect in hot temperatures and warm in cold days. The entire production process of ECOLYPT fiber is characterized by a closed loop: all water and enzymes are recovered and reused in a further production process.
  • NATEX: Derived from castor beans, NATEX fibre reduces garment weight by 25% and dries 50% faster than conventional nylon. It is more elastic and has a bacteriostatic effect that minimizes odor.

Size Chart:

A Chest 35"-38.6" 39"-42.5" 42.9"-46.5"
B Waist 30.3"-33.9" 34.3"-37.8" 38.2"-41.7"
C Hip 36.6"-40.2" 40.6"-44.1" 44.5"- 48"



Size LXL or SM or XXL
Color BLK
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