Equinox Ultralite Mummy Bivi Sleeping Bag

I use it as a sleeping bag cover to protect my bag against condensation on my uberlight single wall tent. It is perfect for that job. Well made. No problems with the stitching at all unlike another reviewer. I won't give it maximum because of lack of length choices, but in fairness I did understand the length before buying it. I would never recommend using it purely as a Bivi. It's a waterproof cover in my opinion.

Note, current bag is green, not blue (made me happy). Amazingly light and compact. Clearly made to price and weight point, but seems well-made. Don't think it'll keep you dry on its own--foot of my sleeping bag got damp where I touched my tarp with this last outing.I'm 5'-11" and 200 lbs, and I fit in it with a 25degree synthetic mummy bag, with thin foam pad *inside*. It's not roomy, and I'd not want to be much bigger. (Elsewhere, they make and sell an extra-large version.)Biggest gripe is that the zipper has a one-sided pull--so you can't zip it up from the inside. Very annoying, and so easily fixed, they really fell down on that.

I use this in conjunction with a 45 degree down bag and a polypropylene bag liner. It adds a layer of warmth in the high desert where I have used this combo at 25 degrees in open air. I have yet to test it in the rain but it seems well built, is very light and does exactly what I hoped it would do.

The fabric is typical of lightweight 1.1 oz nylon, but the stitching is extremely low quality. The serged seams leave loose threads dangling with no reverse stitch to lock the threads. I could pull the whole seam out of balance by tugging the loose thread ends. Even more dissapointing, some of these loose seams are in the "waterproof" silnylon foot box. The seam leaks water like a sieve. No seam tape or sealing adhesive is used. The stitching quality is far below my expectations for the price.This product uses the "ultralite" moniker to jack up the price while skimping on quality. Look elsewhere if you value your comfort or safety on your ultralight adventure, this is overpriced, low-quality trash.