TEMPORARILY OUT OF STOCK - If you need peace of mind about keeping your spa closed, look no further than the SteelCore Hot Tub and Spa Security Straps. These cut-resistant straps are considered to be the strongest available and are perfect for rental properties, preventing unwanted use, and ensuring safety for children around your spa or hot tub. We recommend these straps partly because of the unique S.E.W. material the straps are made out of which uses a web of interwoven steel that is much more resistant to cutting than regular steel cable. Take our word for it, these straps are up to the task!