simultaneously rigid and comfortable, the Sidi T-4 Air Carbon Composite Shoes give you the advantage you've been looking for to slice time in the transition area in an eye-catching package that will stop your competitors in their tracks. From a purely functional standpoint, we can agree that rigidity is key. That's why Sidi uses a multi-step system to ensure that your power output receives a minimal amount of dissipation through the interaction of the shoe and the pedal. To achieve this, Sidi incorporated its new Twelve Carbon Composite sole, with carbon fiber injected into a nylon matrix to deliver stiff power transfer and long-mile comfort, with an added bonus of durability. Sidi estimates that the new material is less susceptible to temperature extremes and wear, and accordingly, the soles are predicted to retain their rigidity levels over multiple seasons of use. For fit, Sidi understands that triathlon plays by another set of rules. Its hallmark ratcheting system and Ergo Buckles aren't relevant to your discipline, so, Sidi incorporated a two-strap closure system, mated with a 'burrito-wrap' upper, with one layer of the upper wrapping over the other. This allows you to quickly dial in the volume of the shoe, on-the-fly during a race if needed. For your T1 transitions, the two-strap closure system is a breeze. The large top strap opens away from the drivetrain to allow a quick and seamless securing of the shoe. As for the bottom strap, you'll find that this is used less for transitions, and more left alone once you've established your desired volume and fit. However, the gripper tabs placement on the strap simplifies any adjustments that you might need to make from the saddle. For extra time savings at T1, Sidi has also included a durable pull-tab at the heel.
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