Compressport ON/Off Multisport Shirt Long Sleeve ON when you go up! OFF when you get down! That`s what thisMultisport Shirtdoes when the exclusive fibre used to knit it, breathes and ventilates with you. With a light spin control compression zone, woven directly in the fabric, the shirt helps you keep a straight posture and aligned shoulders. 3D patches equip the shirt to compress targeted biceps and forearms. Fully ergonomic, they prevent shocks and vibrations. It is a first-layer shirt that protects you from cold and heat and has a compression-massage-strengthening function that prevents muscular oscillations and helps eliminate toxins and improve recovery. 42,000 breathing alveoli compose the fibre and open to let in the air you need to perform and close up to guarantee a high compression descent with perfect muscle strength.