The Yoga Mad chip foam half block is used to lessen the height of ones lift by less than 2 (5cm) in one go i.e. in Virasana. It is designed to be used as cushioning in inversions, such as the shoulder stand (four blocks required), to support the head in forward bends & for lift in seated twists. The block is made from recycled chip foam, which means that the actual colours may vary.