Sunward Fashion Bike Bicycle Arm Warmers Sleeve Cover UV Sun Protection 100% brand new and high quality. Material:Lycra 10%; Polyamide Fiber 90% Size:M: Length: 35.5cm, cuffs circumference22.5cm and 17cm Size:L: Length: 38cm, cuffs circumference 24.5cm and 18cm All dimensions are measured by hand, there may be 2-3 cm deviations.