Paladin Men's Armor Pattern Bike Shirt Short Sleeve Cycling Jersey polyester Breathable polyester with good function for keeping drying and cooling Three rear pockets on the cycling jersey to carry some essentials while riding UPF 30+ sun protection of this bicycle jersey and not easy to peel, fade or cracking pattern High quality zipper, sliding through the 10000 test US size,please see the size chart for reference,if you like loose,recommend 1 size up cause tight design