The Fuel Pureformance Adjustable Plyometrics Box is a must-have training tool for explosive jumps and speed training. Plyometrics training is great for improving explosiveness, speed and vertical jump. Athletes of all levels use these boxes for forward, lateral, and other plyometric jumping drills. Increase not only in your vertical jumping ability, but also drastically increase foot speed, cardiovascular endurance, overall leg strength and health. The number of exercises you can perform are endless and only limited by your creativity. Ahtletes of all levels can improve performance and increase speed agility and all around fitness levels with plyometric training. This plyo box is adjustable to three heights: 14", 18" and 22". The non slip landing surface is 16" x 16". Designed with quick spring button adjustment for easy and fast adjustments. Constructed with non marking rubber feet, powder coat finish and convenient space saving design.