This is a great addition to the collection! Not a lot to say about them. Fill them with snow or rocks and you're tent stays put! They've worn a very long time and I've never had a problem. I pack them everywhere....better safe than sorry. Nice product and extremely easy to use!

nice idea, but these are just too small to do much good. I looked around and found a larger, similar design. They were a bit more expensive, but on two trips they have worked much better than the smaller ones. I think I got the larger ones at www.pahaque.com.

my friend had these last year when we went camping on mt rainier and they worked so well i immediately bought a bunch for my tent. they wouldn't work so well in powdery snow, but in packable snow they are perfect. they work best if you first attach them to your tent with small caribeeners and stretch them out to see about where you want them. then dig a hole about 1-1 1/2 feet deep. then make a large grapefruit size snowball to put in them to start. pull them taught, and pack more snow around and over them, stomping it down tight. i was in a snow storm the first time i used them for myself and the tent never budged.

This is what is being used by many mountaineers for tents on Denali expeditions. That says a lot about this product.