Castelli UPF 50 + Light Arm 3 Sleeves - Black Component Tools The kit includes the hose

The kit includes the hose and all necessary compression hardware

At a claimed 232 grams in a silky black finish

because a hanger that sits even slightly out of alignment will never let a rear derailleur index cleanly no matter how much you fiddle with the barrel adjuster

Everything lives in a TPU-coated case that resists water

Castelli UPF 50 + Light Arm 3 Sleeves - Black Component Tools The kit includes the hoseWhat Makes the Castelli UPF 50 + Light Arm 3 Sleeves the Smart Choice for Sunny Rides? The Castelli UPF 50 + Light Arm 3 Sleeves use a polyester based Solare fabric that Castelli's lab tested at blocking 99. 8 percent of damaging UV rays. The fabric is more effective than nylon at stopping UV while doing a much better job of moving moisture, which means you stay drier and cooler when the sun is on you. Construction is kept clean to eliminate seams