TUNEDFIT™ Dual Lacing System features two cinch cords per shoe, allowing independent adjustment around the forefoot and midfoot. Combined with a wide toe box, it gives your toes room to splay, flex and move naturally while keeping your foot secure through long-distance trail running.

The T1 uses a high-performance woven fabric upper reinforced with aramid fibers, delivering exceptional durability without compromising breathability. An anti-siphon knit tongue helps repel water, while the fast-drying construction is designed to perform in demanding trail conditions.

LightCELL™, the T1's proprietary midsole, uses supercritical foaming to deliver an exceptionally lightweight and responsive ride. It weighs just 50% of EVA while offering 45% greater energy return, helping maintain consistent responsiveness mile after mile.

The T1 combines three Vibram® technologies: Megagrip rubber for confident traction, Litebase to reduce outsole weight by 30% without compromising performance, and Traction Lug micro-features that provide up to 25% more grip. The outsole uses 4 mm lugs for technical trail terrain.