Castelli Premio Evo 18 Sock The Finishing Touch Long days in the saddle demand socks that can keep up. The Premio Evo 18 is the sock complement to one of the most comfort-focused kits on the road, and it holds up that standard from the ground up. The tall 18 cm cuff sits high enough to look right with bib shorts and delivers UPF 50 sun protection on exposed skin. If you're already riding in Premio kit, this is the sock that completes the picture. Features18 cm cuff height tall enough for proper kit coverage and a clean look with bib shorts UPF 50 sun protection shields exposed skin on long rides in full sun Premio collection fit designed to pair with the rest of the Premio kit Shoe size-based sizing matched to your foot for a precise, no-slip fit inside the shoe | Castelli | Premio Evo 18 Sock Men's | Size Small/medium In White