"Description Jade's best yoga blocks are the perfect yoga props- made with sustainably harvested cork in Portugal from the bark of native cork trees- a rapidly renewable resource. Cork provides extreme comfort, strength, and stability, offers firm support for your yoga practice, and is naturally antimicrobial and water-resistant. JADE CORK YOGA BLOCK SPECS Available in Small (3" x 4.75" x 9") and Large (4" x 6" x 9") BE THE CHANGE: Through its partnership with the Rainforest Trust, JADE PRESERVES 2,000 SQUARE FEET OF RAIN FOREST FOR EACH BLOCK SOLD."