4 x Recycled Chip Foam FULL Yoga Blocks are heavier than the original Yoga Block as they are made from reconstituted foam (chip foam) which is produced using various grades of recycled scrap foam. Their dense quality means they are strong enough to support any yoga posture, yet soft enough to be comfortable. The colours of these Chip Foam Blocks may vary. Ideal to support the body in many yoga postures, for example Sukhasana (Simple Cross Legs), Virasana (Hero Pose) (twist), Setu Bandha Sarvangasana (Shoulder Stand Bridge Pose - supported), Halasana and Ardha Halasana (Plough and Half Plough Pose) and Salamba Sarangasana (supported Shoulder Stand).