Airfit Chakra Yoga Block is made of 100% natural cork that is biodegradable and antibacterial. This high density block provides a firm grip, making poses more accessible. The Chakra black also provides length, support & ensures proper alignment. Perfect as a tool for strength building and more advanced pose balance. Rounded edges for comfort. Specifications 700g, 7.5cm x 13.7cm x 22.5cm