Our Superior® CSLP polyester sleeves provide comfort with a water-activated cooling effect for rapid cool-down times in warmer conditions, plus protection against the sun’s UV rays. Water triggers the cooling effect that dries quickly for comfort from heat, and the sleeve is rated UPF 50+ to block 98% of UV rays, safeguarding skin from sun damage. Elastic grip at the biceps and tapered fit secure the sleeve in place. Available in a 17-inch length, in black (CSLPB) and hi-viz yellow (CSLPY). Breathable polyester knit wicks away sweat for cool and comfortable all-day wear.