Callaway's New Opti-Fit Gloves give you the Flexibility of a Universal Fit and 4-Way Compression. One Size Fits Most Small - XL. Premium Japanese Synthetic Material - Great Feel, Flexibility and Increased Durability. 4-Way Stretch Synthetic on Stretch Points - Advanced Performance: Moisture Wicking, Breathability & Flexibility. Opti Fit, Adjustable Closure - Thin, Light and Secure Fit. Stretch Binding Cuff - Secure Feel & Moisture Absorption.