The yoga mad full yoga block is used for cushioning within inversions the block provides you with extra stability and support during yoga or pilates poses you can place it under your hands feet or the spine to ensure correct alignment it is made from non toxic stretch resistant first grade eva foam and has 3mm chamfered edges the block is 305cm 12 long 205cm 8 wide and 5cm 2 high the yoga mad full yoga block is sold singly