A great Triathlon specific cycling shoe must be quick to get into and deliver comfort and outstanding pedaling efficiency for both short course events right through to Ironman biking distances. The T-5 Air Road Shoes ticks those boxes with ease. Immediate comfort comes by the way of the advanced and eco-friendly upper material - 'Politex'. This material gives you a supple and comfortable fit and, thanks to its unique construction, is highly resistant to ripping, abrasions, stretching and fading. It's the perfect choice to keep the shoes in perfect condition for all your training and triathlon racing needs. For lightning-quick transitions, the T-5s feature a wide foot opening that's quickly adjusted to your preference via the dual strap system. The heel loop makes it impressively easy to get your foot in place too, even on the go, letting you get a jump on your competitors. With the Sidi heel cup, you'll also enjoy a solid and stable pedaling platform with your foot held in just the right position even during longer events. 12 Carbon Composite Sole Once you're on the bike, the 12 Carbon Composite Sole provides instantaneous power transfer, getting you up to speed with optimal efficiency. The blend of nylon and carbon fiber gives a sole that is both rigid and lightweight letting you maintain your speed without power loss. The carbon fibers also ensure the stiffness rating won't degrade over time or be affected by heat or humidity. A performance sole unit engineered to last and last.