The River Otter Deluxe Is Like The River Otter, But With An Added Backrest To Enhance Comfort As You Go Riding Down The River. This Heavy Gauge Pvc Tube Has 2 Molded Handles, A Protective Double Stitched Polyester Cover Molded Drink Holder, And 2 Rope Anchors That Can Tether With Other Tubes. Speed Safety Valve. 48 In. (Deflated) Diameter.