These are Racing Level Jersey with Aero Tight Fit cut， order one size up to get Standard Fitting;.Fast-drying, moisture wicking, stretchable fabric with ventilation structure. "Cross shape" wicking channel yarn infused drags sweat to the fabric surface side, then dry in the air. The ventilation structure pushes air flowing in&out to cool down body temperature. The best choice for summer biking;.Durable Italian Power Band Sleeve opening, no chafing, right place, right compression and right shape. The Next to skin design helps to reduce wind resistance, stop the flaping. Not like traditional silicone gripper that cuts your skin leaving deep marks, Anti-Slip Power Band Sleeve opening offers revolution gripper function in soft comfy;.Anti slip-up bottom keep the jersey in right place; 3 Rear cargo pockets offer enough room for stuff; 3 Reflective tapes offer Essential safety guard at night biking;.Bike jerseys are with brand specific measurement. Do follow the size guiding to pick the right size. Feel free to ask a question if you need support, you will get reply within 8 hours.