Size: 150 CM LOT OF 4. Foam Plyobox for plyometric exercisesThe Plyobox is ideal for improving vertical jumping and rebounding ability (box jump). The Plyobox is ideal for plyometric exercises. Plyometrics is an explosive muscle-building method that stimulates the elastic strength of muscles, as well as the myotatic reflex, to improve the power of a muscle during a brief, rapid effort. Accessible to everyone, plyometric exercises can be used as part of physical preparation for team sports such as handball, basketball or rugby. The plyoboxes shown here come in a range of sizes, depending on the jump height chosen. Their non-slip surface and soft grip make them extremely easy to use. The following sizes are available:Size S: 90 cm x 75 cm x 15 cm. Size M: 90 cm x 75 cm x 30 cm. Size L: 90 cm x 75 cm x 45 cm. Size XL: 90 cm x 75 cm x 60 cm. Summary of product features:Plyobox in high-density foam with anti-slip coating and carrying handle4 box heights available, individually or in sets: 15 cm, 30 cm, 45 cm, 60 cmBlack coating with height index and brand name displayed on blank