Made of seamless fabric to avoid irritation from the stitching, UP is lightweight and soft. Its stretchy fabric breathes and wicks moisture away from your body which will prevent any skin irritation. The silver textiles will help keep your clothing fresh and reduce odors. It also has the property to balance the body temperature in cold conditions. The elasticity will adjust to your shape without feeling any restrictions on your rib cage or shoulders. 100% Made in Italy.