Boyd Flotation free flow waterbed tubes fit inside a 4″ shallow fill softside waterbed mattress. A tube filled waterbed mattress allows you to independently adjust the level of support, from plush to firm, on each side of the bed.

These are replacement tubes for a softside waterbed mattress. Not certain if you have a free flow tube? Open the valve of your tube. If you see only water, you have a free flow tube. Softside waterbed replacement tubes sold as sets only. Shallow fill replacement waterbed tubes fit a 4″ shallow fill softside waterbed mattress.

Each free flow waterbed tube comes with one (1) waterbed conditioner tablet already pre-placed inside each tube. We recommend that you add replacement waterbed conditioner tablets once per year.