Castelli UPF 50 + Light Arm Sleeves Size:XLarge This elaborate design combines active

This elaborate design combines active vents in the helmet's shell with exhaust channels inside the helmet that thrust fresh

USA and design and manufacture suspension systems for bicycles

Non-dust attracting - excels in dry and dusty conditions

Redesigned centre tread for ultimate speed

Castelli UPF 50 + Light Arm Sleeves Size:XLarge This elaborate design combines activeAbout Castelli UPF 50 + Light Arm SleevesFor maximum sun protection with minimal insulation. Castelli can officially only rate these warmers at UPF 50+, but in their laboratory tests they actually blocked 99. 8 percent of damaging UV rays. They 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.