The ZAN headgear SportFlex Series Arm Sleeves are a great way of protecting your arms from sunburn thanks to 50+ UV protection. Great to wear to have an extra thermal layer in the winter time or soak up your sweat in the heat of summer. The Sportflex Arm Sleeves from ZAN headgear are heavier than your standard arm sleeve, with a softness & comfort that surpasses any Competitor.; 50+ UV protection Extra internal grip to keep the sleeves in place Flattened seams for added comfort 4-Way stretch material