I’ve been using Gossamer Gear’s ultralight polycryo goundsheets for years and they’re a fabulous ultralight alternative to much heavier footprints.
Polycryo is a clear, multilayer, cross-linked polyolefin film that is amazingly lightweight, weighing only 1.5 oz for a 40 x 96 inch sheet. It’s perfect for use as a groundsheet under a tent or a tarp, to keep your sleeping gear dry on wet ground and for giving you a dry place to sit. They’re also very puncture resistant and can be used over and over if you fold and dry them after each trip.
Gossamer Gear sells a wide version of the polycryo groundsheet that was ultralight and big enough to use as a tent footprint, in addition to a narrower, medium size which is more appropriately sized for a bivy or tarp shelter system.
Still, for just $9.95 for two ultralight ground sheets, they’re one of the best investments you can make to stay comfortable in wet or damp climates,
Disclosure: The author owns this product and purchased it using their own funds.
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