Features of the Callaway Fusion Golf Glove: Fusetech™ - A Premium Synthetic Added to the Back of Hand that Fuses Material in a Propriety Process for Maximized Comfort, Flexibility and Increased Durability. FLX360™ - A Permeable, Stretchable Mesh that Provides 360 Degrees of Cool Comfort and Maximum Flexibility. Cabretta Leather - Placed on the Entire Palm, Fingers and Thumb for Optimal Feel and Grip. Extreme Micro-Ventilation - An Enhanced Network of Strategically Positioned Perforations Deliver Total Breathability. Revolutionary Materials Comfort and Breathability Total Performance and Control