Tyrol Multi-Surface Rubber Outsole - Developed in our labs to perform on both Outdoor silica grit treated, and smooth indoor playing surfaces. The Chevron Design provides excellent non-slip performance and stability. Lightweight Material - Our removable insole has a Polyurethane base with Nylex top layer. Polyurethane is a shock-absorbing material that dispels impact outwardly for better cushioning comfort. The insole uses Tyrol’s Cooling System and has perforation in arch area that allows for breathable flow through ventilation. Heel Stabilizer - The heel stabilizer is designed to give rear foot control and support. Our sculpted last follows foot anatomy and creates a curved heel. The curved heel sets your foot snuggly into the back of the shoe and provide correct alignment to prevent ankle rollover. Generously Wide Toe Box - This shoe is built as a medium fit shoe and is slightly narrower than our other Tyrol models. The ‘D’ fit last does however continue to offer a deeper toe height that supports the quick forward / stop action in going to the kitchen line. This fit is designed for Pickleball players to prevent toe injury which is prevalent in the sport. Torsion Control Shank - Equipped with Tyrol’s Torsional Control Shank to provide lateral stability working in unison with the exterior Heel Counter to prevent ankle rollover in the quick side to side movement of Pickleball. New for 2025, The Ace series has our signature fit with enhanced features. Built on our original custom last, the Stack Series delivers the wide and deep toe box and curved heel fit players rely on for locked-in stability and all-day toe comfort. The new lightweight, scuff-resistant KPU material in the upper is built to withstand wear and tear while maximizing airflow ventilation, keeping your feet cool through every match. Featuring the same herringbone tread as our Smash series, this high-abrasion outsole delivers exceptional traction on any playing surface—whether you’re competing on silica grit-treated outdoor courts or smooth indoor tile and parquet floors. A removable polyurethane insole and shock-absorbing EVA midsole provide long-lasting comfort, while the exterior heel stabilizer and torsion control shank work together to reinforce lateral stability—giving you the support and confidence to move freely.