The Sexy Hotness sleeping bag is like the Snuggie of sleeping bags! With built-in legs and slippers at the bottom, you can stay in it as long as you want. Plus, zippers on the side mean you can add as many sleeping bags together as you want (to each his own... we don't judge.)
The makers of the sleeping bag designed it specifically for Kama Sutra poses and there are zippers in the middle for access to... well, you get the point. Or for, you know, middle-of-the-night bathroom breaks.