Balsa Stability Yoga Block (Small) by Jade Jade Balsa Yoga Blocks are made with 100% balsa wood, a rapidly renewable resource, harvested from the balsa trees outside of rainforest areas. Soft, but not spongy, perfect for supporting poses, aiding alignment and opening your practice. Jade Balsa Stability is extra dense for added grounding. (We also have a lightweight block (HERE) for yogis on the go.) Jade Balsa Blocks are made from naturally growing and non-engineered balsa wood, Jade Balsa Blocks may vary slightly in weight and appearance. Through its partnership with Trees for the Future, Jade preserves 100 square feet of rainforest for each block sold. Size: 2.75” x 5.25” x 8.75” Weight: 22 ounces