This Yoga Block is best used for cushioning within inversions. Spacer blocks of 1 are particularly useful when needing to reduce or increase the height of ones lift by less than 2" (5cm) in one go. Available in non-toxic, scratch-resistant first grade EVA foam with 3mm chamfered edges or in recycled chip foam. 305mm x 205mm x 50mm 42kg/cbm density Size: 305mm x 205mm x 50mm