Note:This productu0026#39;s size is smaller than US size standard, please check the size chart when you choose sizenkeep you comfortable while riding in hot whether. with quick dry moisture and breathable function.nThese cycling wear with high tech fabric breaths to keep you dryer by wicking sweat away from your skinnCOOLMAX: Quick-Dry Function and Make you Feel More ComfortablenJersey Material: 100% Polyester Pants Material: 80% polyester and 20% LycranSize chart: S -> 5.25 ~ 5.5 ft u0026 110 ~121 lbs M -> 5.5 ~ 5.74 ft u0026 121 ~143 lbs L -> 5.74 ~ 5.9 ft u0026 143 ~165 lbs XL -> 5.9 ~ 6.07 ft u0026 165 ~176 lbs XXL -> 6.07 ~ 6.17 ft u0026 176 ~187 lbs XXXL -> 6.17 ~ 6.3 ft u0026 187 ~198 lbs Size Specifications: (Chest Circumference) Small: 34 to 36 inches Medium: 36 to 38 inches Large: 38 to 40 inches X Large: 40 to 42 inches XX Large: 42 to 44 inches XXX Large: 44 to 46 inches (Waist Measurement) Relaxed(Min) Stretched(Max) S: 21 to 28 inches M: 22 to 30 inches L: 24 to 33 inches X Large: 25 to 35 inches XX Large: 27 to 37 inches XXX Large: 28 to 39 inches