The sleeveless version of Castelli's Free Sanremo suit, with meticulously considered details that make a difference on race day.Key Features:Second-generation Sanremo sleeveless suit is faster than everVelocity Rev2 main body fabric delivers aerodynamics with excellent fit and moisture managementBack fabric in Velocity mesh for breathability, yet it blocks 94% of UV rays for significant sun protection (UPF 16)Construction around armhole for no gaps and reduced chafingCastelli's Sanremo front opening makes it easier to bend for cycling and straighten out for the run and swim2 rear pockets lie flat in the swim but allow generous room for nutritionNew short construction fits more securely with more muscle supportGIRO4 flat leg grippers on longer legs for maximum aerodynamicsKISS Tri seat pad that provides comfort on the bike and that you almost don't feel during the run