The Napsack is a new product from Poler that is part sleeping bag, part hoodie. In a similar vein to the Selk'Bag, it has the warmth and cushioning of a run-of-the-mill sleeping bag, but it is completely wearable like a hooded sweatshirt.
The Napsack has a zipper at the bottom that allows you to open it up and pull it over your legs. It also cinches at the bottom, so you can wrap it above your knees and walk around comfortably while wearing it. The idea is that you can wear it while sitting around the campfire and walk right into the tent, zip up the bottom and go to sleep as you would with any other sleeping bag.
It also comes with zippers near the shoulders so you can pull your arms out. It would be pretty hard to actually make s'mores at the campfire if your arms were locked inside of the sleeping bag.
The Napsack additionally features pockets, so you can carry around your phone or other personal articles while you are wearing it as a hoodie. The chest pocket has a pass-through, so you can run headphones inside and listen to music.
This is not the warmest of sleeping bags, so it can also be used around the house. This means that it isn't meant for being used if you are camping in the dead of winter, but is instead intended more for use in moderate weather.
The Napsack is available now for US$130. It comes in two sizes and is available in black, blue, green, and orange.
Pretty much the same effect as wearing your day clothes to bed instead of changing into dry bed clothes.