Our wide, 4-inch Deluxe Hose Retainers are made of a proprietary, stretch material used in bandages. The material holds up to salt water and dries quickly. Silicone strips on the inside of the band grip the tank and prevent rolling. A 1 x 2-inch nylon pull tab makes accessing the hose retainer easy, even when using gloves. Comes in size small or large and black or green. Made in the USA.