They offer the perfect level of compression to support your muscles in a sprint, while remaining comfortable. The structurally simple sock is held firmly in place by internal silicone tape, so it will deliver the optimal gains you need to achieve victory.Castelli offers the option to design a bespoke sleeve to match your teams kit through its custom programme, so theres no excuse not to wear the light and competitive Fast Legs to all your events.Key features:Part of the Rosso Corsa range, these sleeves are optimised for racingDesigned and tested in the wind tunnel with marginal gains in mindLightly compressive, they will fit perfectly and promote blood flowWith non-slip silicone tape at the topsOption to incorporate your team colours with Castellis custom programme