Eskaay Leather Workout Speed Bag Punching Bag Speedball Punch Kick Bag Leather Speedball is made of Genuine Cowhide Leather and Panels reinforced with double layered fabric lining coated with best quality solution. Quality Eskaay equipment, Standard Size Speed bag for Boxers, Martial Arts Fighters, Gym Trainers and combat Trainers. Pro-style design ideal for endurance training. Swivel is not Included in this listing. All seams hand stitched perfectly with strong and durable thread. Lightweight design means fast rebounds. Best quality Latex Bladder, durable and has best bounce result. Riveted attachment provides superior durability.