Premium Japanese Synthetic Material – Great Feel, Flexibility, and Increased Durability. 4-way Stretch Synthetic on Knuckles – Advanced Performance: Moisture-wicking, Breathability, and Flexibility. Perforations on Palm, Top of Hand, and Fingers – Moisture Reduction and Increased Breathability. Reinforced Palm Patches – Improved Grip and Durability in All Weather Conditions. Opti Fit™ Adjustable Closure – Thin, Light, and Secure Fit. Stretch Binding Cuff – Secure Feel and Moisture Absorption.