SIERRA DESIGNS CLOUD 800 20° £335

This sleeping bag is a maverick. There’s no zip, but it still opens wide thanks to a curved, wraparound ‘comforter’ – a duvet-like flap that pulls over your upper body. This delivers a sensation far more akin to your beloved bed at home than any other sleeping bag. With 419g of 800 fill power down and a -3˚C comfort rating, warmth is pretty impressive for the price too.

VERDICT A versatile, warm and extremely comfy sleeping bag with an innovative design – but the quilt-like approach won’t suit everyone.