Great stretch fabric, stretchable and comfortable fit. Combination of functional materials and an innovative mesh vent design for riders of all levels. 100% polyester for cycling jersey; shorts is made of 80% polyester 20% spandex with elasticity . 1. High breathable quick dry polyester fabric for jersey, strong elasticity spandex for shorts. 2. Full length zipper, 3 traditional back pockets for storage. 3. Original brand, individual packing, high-tech sublimation printing. 4. Elastic waist, coolmax silicon gel pad breathable, wearproof. 5. Even you're sweaty, the jersey never adhere to your skin, quick-dry function and make you feel more comfortable.Size chart: US Small: Height:5'3"-5'6", Weight: 110-135 lbs,Waist:28"-30"; US Medium: Height:5'5"-5'9", Weight: 130-165lbs,Waist:31"-33.5"; US Large: Height: 5'9"-6', Weight: 160-180lbs,Waist: 33.5"-35"; US X-Large: Height: 5'11"-6'2", Weight:175-190 lbs, Waist: 35.5"-38"; US XX-Large: Height: 6'2"-6'4" Weight: 185-225lbs,Waist: 38.5"-41". We offer comfortable products to all bicycle users who are engaged into any particular bicycle lifestyle. Riding it in an enjoyable sporty way during the weekend or often enjoy a long bicycle holiday.