Designed for Ironman, the Triathlon Evo is a tubular with a 320TPI casing and slick tread. Butyl air chamber (does not lose air) to maintain pressure even when the bike has been parked in the changing area before. The Triathlon family uses the best Vittoria technologies and readapts them specifically for the Triathlon discipline. Width specifically calculated to have the best aerodynamic values in the high-profile rims, also typical of solitary time trial tests, and an air chamber completely impermeable to air, to avoid even the slightest p pressure loss when the bicycle is left in a gear area overnight. We recommend the installation in workshops because some parts require adapting connections. Some of the items including this may not be available, if so, we would warn with a availabilit.