Amazon.com : Cork Yoga Block (Set of 2) - Solid Natural Cork Exercise Brick - 9 x 6 x 4 Inches : Sports & Outdoors
Amazon.com : Hossejoy Cork Wood Yoga Blocks, Support Brick to Deepen Poses, Improve Strength and Aid Balance and Flexibility, 8.7 x 5.7 x 2.9 in, Set of 2 : Sports & Outdoors