The Aetrex Bondi is made of UltraSKY injected EVA to provide extreme cushioning, shock attenuation and durability. The clog is waterproof and durable and in addition, it provides total convenience of a slip-on shoe. The Aetrex orthotic support helps in properly aligning your knees, hips, and back. The dual density outsole provides extra cushioning to the heel & ball-of-foot. The soft metatarsal cushion reduces stress at the forefoot.