Featuresr the size is us size size is optional chest measurement schest 35 37in mchest 38 40in lchest 42 435in xlchest 435 46in xxlchest 465 49inr quick dry function and make you feel more comfortabler unique mesh fabric under armpit for keeping drying and coolingr direct vent panels and full length zipper for ventilationr hem with wosawe logo silicone band can provent skin allergy and the cloth upgliding during ridingr 3 pockets at the back easy to carrying your smal