The ZAN headgear SportFlex Series Arm Sleeve is heavy duty when compared to the standard arm sleeve, with a softness & comfort that surpasses all others. A functional reflective tape has been added to the sides of the sleeves for visibility and safety for every ride. Perfect to wear as protection from the sun or to keep warm in the cold.; Durable fabric 50+ UPF Protection from the sun Gripped to keep the sleeves in place Flattened seams for more comfort Reflective paneling for increased visibility