The swimmers wrap has a finished top band for stability of the product. It is made of lycra material and will snug the pouch to the body inside a pocket. The swimmers wrap is NOT waterproof and there is a drainage section in the pocket to allow the water to flow through. The user will step into the swim wrap and pull up to the position desired. The wrap is 6″ to 7″ in width and fits snuggly around the body. The pocket is designed in the vertical position to allow proper drainage. If your waist or hip size is not listed please let us know and we will gladly make adjustments since this is a custom manufactured product. WE MUST HAVE ACCURATE MEASUREMENTS FOR A SNUG FIT!