Zipper closure Please refer to our size chart to choose the size that suits you. High visibility: we put reflective logo behind the pockets to improve visibility at night and in low light environment, keep you safe in darkenss 3 rear pockets : Three pockets for storage when cycling you can stash repair tool kits, phone, food or clothing for change, don’t worry about hunger on the road. Lightweight and durable: Lightweight materials, fine workmanship, and splicing ensure daily use. The sleeves and side panels are made from a larger mesh fabric to provide better ventilation,making you More comfortable when riding. Suitable for kinds of outdoor sports. Material composition: 100% polyester, using a variety of high-quality breathable mesh fabric combination, breathable, fast drying, light and moisture wicking, especially suitable for hot weather. Whether you are a mountain bike or a bicycle race, this bike shirt will definitely make you feel cool and comfortable. Zipper closure??Top quality front zipper slides easily making the shirt easy to put on and off. Elastic hem with gel gripper,make sure the jerseys tight and never move when cycling.