bintiva Cork Yoga Blocks, Eco Friendly, Natural Yoga Bricks Crafted from eco friendly, natural, fast growing, renewable, and long lasting cork. Natural cork texture provides traction for difficult poses. Heavy weight block for added stability, rounded edges create a more comfortable experience. Yoga blocks help refine alignment and balance, and are ideal for many prop based yoga exercises. Finished product dimensions: 8.75" x 5.75" x 3.75".