Tubes featuring Body Gloves® Patent Pending S3 Technology. S3 Technologyis designed to give the rider maximum comfort and enjoyment by providing a seating area that is comprised of neoprene stretched over the opening in the tube. S3 (Suspended Seating System) cradles the rider inches above the choppy water, providing a more comfortable ride, no matter what the conditions. In addition, all S3 tubes can be used as either traditional sit-ins, or as deck tubes as well. Sling Mono: Round shape designed for one rider. Color: Yellow/Black.