MOUNTAIN EQUIPMENT FIREFLY £360

Another top-quality sleeping bag from the master of down, Mountain Equipment, the Firefly is a superbly engineered 2- to 3-season bag with a comfort rating of 2°C. The cosy panelled hood and contoured footbox wrap the extremities snugly, while the main body has elasticated inner chambers to minimise dead air and help the down to loft inside the baffles. This meticulous design makes it highly efficient, so it offers plenty of warmth in a lightweight package.

VERDICT A fully-featured premium down bag that delivers plenty of warmth, while minimising weight and pack size – ideal for serious mountain users.