Castelli UPF 50 + Light Arm Sleeves Shipping_bulky 4 mm Seat Angle 74

4 mm Seat Angle 74

8mm handlebars ONLY

Integrated Carry Pockets: Keep your tools and repair kit organized

the head angle of the Lumen can be easily adjusted through one of 3 positions

incredible shifting efficiency

Castelli UPF 50 + Light Arm Sleeves Shipping_bulky 4 mm Seat Angle 74About 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.