The new Backcountry Bed 800 sleeping bag does away with constricting zippers and opts for a double layered design offering a more comfy sleep.

The bag's out layer has 800 fill down that's been treated with a water resistant chemical called DriDown. And instead of sealing you inside the zipper, the bag's inner layer works more like a duvet and lets you pull it up to keep warm.

At $400 for a 15 degrees version, and $350 for a 30 degrees one, it's not the cheapest of sleeping bags around, but its definitely a whole lot comfier than most. [Sierra Designs via Gear Junkie]