The Sea to Summit Compression Sacks are durable bags to help shrink down the contents that will eventually go into your backpack. Whether you're headed out camping, hiking, or on a bike tour, your fluffy sleeping bag won't fit into your pack on its own. Stuff it in one of these, then cinch down the nylon straps. Do the same with your clothing, using a smaller bag. Easy way to make your stuff all fit.
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