Nylon Ski StrapsSet of 4 Ski Straps to hold skis or other equipment together in a Sportube. Replacements if you've lost the straps that initially came with your Sportube.If you bought a Series 3 Sportube and you're going to use it as a multi-ski case, you need to get the Strap and Band Pack.If you need to purchase straps and bands, we recommend the Strap and Band Pack instead of buying the straps and bands separately. It's the same cost and you get two extra straps and bands.