While a good quality sleeping bag is a solid investment for keeping the crisp night air at bay, said bag can quickly become an oven when the ambient temperature heads northwards. Add to this the cramped nature of snoozing in a sack and you get a recipe for discomfort that some of us find hard to bear. The Zippered Vents Sleeping Bag aims to overcome these issues with a design that brings a little versatility to the equation.

The bag is divided into four segments with zippers running horizontally across the body (ankles, knees, waist, and chest) so that you can regulate temperature and stick your limbs out as you please.

The bag has a nylon outer shell and cotton flannel lining with four-layer microfiber insulation in between. It's rated to 20º F (-6.6º C), weighs 5.5 lbs (2.5 kg) and costs US$119.95. There's also a pillow included which fits in a built in sleeve.

Source: Hammacher Schlemmer