Castelli UPF50+ Light Arm Sleeve Size:XL Practical pockets: Two pockets –

Practical pockets: Two pockets – one with a zipper for the hydration system and one mesh pocket for quick access to soft flasks

Traditional camber underfoot provides excellent response and plenty of pop

The New Wave Swim Buoy is useful in point to point swims

Prolink (2-Rail) compatible to NNN® and Turnamic®

Installs easily on the rear skewer of bike

Castelli UPF50+ Light Arm Sleeve Size:XL Practical pockets: Two pockets –Castelli can officially only rate these warmers at UPF 50+, but in our laboratory tests they actually blocked 99. 8 percent of damaging UV rays. Castelli used a polyester base that is not only more effective than nylon at blocking UV rays but is also much better at keeping you dry, which means these arm sleeves are better in both cooler and warmer conditions. Castelli has kept the construction very clean to eliminate seams that can rub, and we used