* These booties were designed and tested with Round Stingrays. * Round Stingrays are the most common source of stingray injury in Southern California, but they are not the only dangerous species of stingray. * The exact level of protection provided against other species is unknown. * * Composition: Two base layers of 2 mm thick neoprene, plus thermoplastic protective material. * Comfort: Soft, flexible, four-way super-stretch neoprene makes this bootie easy to take on and off. Flat seams help prevent chafing and keep your feet comfortable for long periods. * Use: surfing, boogie boarding, swimming, or just playing in the water! Can also be worn under snorkel or dive fins, or as lightweight water shoes for kayaking or paddle boarding. * Patent Pending Technology: Unique dual-layer design balances protection and comfort. price 139