BRUCE BOLT's PREMIUM PRO Elbow Guards feature a semi-moldable thermoplastic protective shell with a Cabretta leather outer and proprietary Sharkskin inner to prevent movement during the swing.  2" wide removable elastic strap locks the elbow guard in place providing maximum protection at the plate. Moldable Thermoplastic Protective Shell Cabretta leather outer shell Sharkskin Inner to prevent movement during the swing 2" wide elastic strap to secure elbow guard in place