The Hand Speed Trainer brings simplicity and efficiency to softball performance training building explosive strength and power in every swing. The HST gives athletes the opportunity to work against functional resistance at full speed in game situations as well as fundamental drill work. Features . Made of top grade neoprene the HST Neoprene sleeve has two built-in performance slots holding streamlined weights of 4 and 8 ounces.. Resistance can be adjusted from 4oz to 24oz in 4oz adjustments as player increases strength levels. The ability to increase the resistance of each HST insures consistent and safe training environments. The HST slides easily over the hand and fits securely onto the forearm providing a snug and comfortable fit.. Two elastic straps help hold the HST in place so it does not interfere with wrist and elbow movement.. With the HST in place players are able to train in virtually every scenario. The science is easy to understand securely add external weight to the forearm train consistently at game speed allowing the body to create strength and muscle memory remove the resistance and watch the hands fly with explosive strength and power.. Size - X-large 2x-large