Castelli UPF 50 + Light Arm 3 Sleeves - Black Component Tools The Park Tool PP-1

The Park Tool PP-1

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

14 kg without compromising stability

Once dried

and touch-screen compatible fingertips handle GPS operation without glove removal

Castelli UPF 50 + Light Arm 3 Sleeves - Black Component Tools The Park Tool PP-1What 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