Weighing just 400g, the Helium sleeping bag from Mountain Equipment is certain not going to be the straw that breaks the camel’s back. Filled with ethically sourced duck down, the Helium sleeping bag is a welcoming cocoon at the end of a long day and a great option if you’re going to be in some of the warmer places around the world. You might also want to consider an inflatable roll mat and pillow, plus silk liner, for upping the comfort factor.

Price: £199, available from Mountain Equipment. 

Best Price: £135, available from Hill and Dale Outdoors.