HIGH-CLASS FABRIC - Made of milk fiber, soft and cool to wear in summer. Outstanding comfort, excellent breathability, highly elasticity, superb moisture absorption.SIZE - Arm circumference: M - 10.24in, L - 11.02in, XL - 11.81in, Length: M - 15.75in, L - 15.75in, XL - 16.34in, great elasticity, suitable for all persons.SIMPLE COLORS - Our low profile designs fit comfortably under clothing, and the pure colors ensure our arm sleeves be the joker pattern that can match almost different kinds of designs and colors of clothes.UV PROTECTION - The fabrics of the arm sleeves are treated with ultraviolet light absorber that can powerfully absorb the high-energy ultraviolet and maximumly protect your arms from the suns harmful damage.OUTDOOR ALL ACTIVITIES - such as golfing, cycling, fishing, driving, jogging, claiming, boating, gardening, basketball, tennis and so on. Great skin protection when you working outside or doing any outdoor activities. Suitable for Indoor Activities too, even your workplaces.