Shop for everything waterbed. Oak and pine wood frames, soft sides and modern floatation systems. 20 Year Warranty on Soft Sides.30 Day FREE Trial on Soft Sides.FREE ACCESSORIES on select waterbed mattresses.FREE SHIPPING in the Lower 48 States. Compare Shallow Fill, Mid Fill and Deep Fill Softside Waterbed Mattresses Hard Side Waterbed Mattress Sizes Chart Soft Side Waterbed Mattress Sizes Chart Comforter Sizes Comparison Chart for Waterbeds Hard Side Waterbed/Furniture Assembly Instructions Soft Side Waterbed Assembly Instructions See our collection of zip-on plush top and pillow top covers for waterbeds.