This environmentally sound yoga block is made from densely compressed chipped foam and is the traditional choice for earth-conscious yogis. Using offcuts from manufacturing other foam products, the colour varies from batch to batch, but is always mottled. The 12lb density of these chipped foam yoga blocks makes them the firmest chipped foam block available. Blocks enhance your practice by supporting, stabilising and aligning the body. Sit on one to raise your hips for a straighter spine, or put four together for a classic shoulder stand support.