These training shoes are specifically designed for high-intensity workouts like CrossFit, featuring several key technical elements: Chalkboard Upper: The "XD" (extra durable) upper features a haptic print designed to provide stability and withstand the abrasion of rope climbs. Flywire Technology: These cables integrate with the laces to provide a secure, locked-in fit. Gum Rubber Outsole: The sticky rubber sole is designed for multi-surface traction and durability during weightlifting.