The design of the Aquajogger Shape water running belt is optimal for women with a wider waistline and pregnant women. Shape's design provides even buoyancy for water runners of this body type. The waterproof material is highly resistant to chlorine and dries quickly AquaJogger's patented design supports and strengthens the lower back Attaching the AquaJogger and adjusting the belt is easy thanks to the flexible belt and the easy-to-use lock The belt is soft, durable and very comfortable to wear The belt also comes with an English self-training guide The ONLY water running belt on the market where you can buy flexible spare belts if necessary