These yoga blocks are used in a.o. Iyengar, Anusara, Ashtanga, Restorative and Power Yoga. They are mainly used for support in backbends and to place under hands in standing poses. They are also used as a tool in physiotherapy. 
 
Natural materials - odorless - rounded edges and corners for comfortable use - slightly springy, yet sturdy - light in weight - anti-slip