The yoga mad cork extra high yoga brick is very lightweight and designed to protect your floors as you use it this extra light and high brick delivers solid stability as you perform different moves and helps you do poses with correct posture alignment both when standing and seated whether its for use at home or in yoga classes this will be a top option and it does not lose its shape as you put your weight on it the block weighs 05kg 11lbs and is made from quality sustainable cork mate