Features Ergonomic 3D cutting YKK zipper 3 pcs dimensional cutting collar Anti-bacterial Lightweight fabric and breaathable honeycomb structure UV Protection Ultra-breathable fabric in armpits Ergonomic back cut-piece use ultra-elastic mesh Moisture absorbing and quick drying Reflective visibility stripes for safety night ride Special sleeve gripper for better fit Elastic bottom hem Surface: Coolbest 68%, Polyseter 32% Side panle, back: Spandex 20%, Polyseter 80%