Is this the lightest sleeping bag ever?

At 473g grams, The Haglöfs L.I.M Down sleeping bag (£340) is one of the lightest in the outdoor world


The  sleeping bag uses an innovative design for one of the most impressive warmth/weight ratios we’ve seen.

Haglöfs have cut grams by removing the zip, instead using a open foot end with cord closure for easy access and ventilation.

It uses 800 fill power down and combines box-wall baffle construction with a quilted, fishtail one in the foot, providing a 6˚C comfort rating in a backpack-friendly package.