This belt is manufactured out of special EVA foam designed to withstand chlorinated water. This newly designed belt also engages the core muscles due to its unique shape. Its still slim enough to keep you afloat and not hamper arm movement. Features:. Reinforced nylon belt attachments with plastic couplings. This belt is specially contoured to fit below the ribcage and above the hips for easy motion and breathing. Provides lumbar support and vertical balance. Made from high-quality materials. Recommended for indoor or outdoor use Dimensions: 29"H x 1.5"W x 7.5"D. Material(s): rubber/nylon