Amazon.com : Hugger Mugger 4 in. Recycled Foam Yoga Block - extra dense and firm, made from recycled foam, reliable support, beveled edges for comfort, helps alignment : Yoga Mat Bags : Sports & Outdoors
4 in. Foam Yoga Block - Hugger Mugger | Studio Favorite Yoga Prop
Hugger Mugger Recycled Foam Block 4" at EverydayYoga.com
3 in. Foam Yoga Block - Hugger Mugger | Narrow, Great For Travel