If you're heading for the mountains in the spring or summer and want a lightweight sleeping bag that won't take up much space in your pack, the Neutrino 200 is a great choice. It's designed to be narrow and compact, so it's easy to carry, and it's made from lightweight materials that still keep you warm.

The Neutrino 200 is filled with goose down, which is really good at trapping heat, and it's stitched in a special way that makes sure the down stays in place and doesn't leave any cold spots. There are extra baffles around the zipper and neck to keep even more heat in, and you can adjust the hood to fit snugly around your face.

We've made the Neutrino 200 with recycled materials, so it's better for the environment, and we've treated the down with a special coating to help it stay dry in damp conditions. It comes with a waterproof sack for easy packing, and we fill each bag by hand in the UK to make sure the down stays fluffy and warm.