Therm-a-Rest Proton Blanket

I have a high quality lightweight down sleeping bag (an old PHDesigns minim 300, about 600g) which I have been comfortable in a few degrees below 0C. It's too warm for summer use and not warm enough for the bottom end of UK winter conditions. Roll in the Proton. It goes nicely over the down bag keeping the dew-point or frost-point outside the down and adding some water resistance and when packed in combination for travelling gives me a huge comfort range (+25C to -10C I'd estimate). The combined weight of the two is not much over the kilo. When I don't need it to boost the down bag it's an excellent pillow stuffed into its own pocket; when I do need it, it's a lot more weight & bulk efficient than a fleece liner or extra clothing. I can also use it under my hammock with a bit of care in rigging it. Used in that manner it cuts out the windchill of and creates a cosy nest.My main criticisms are that it's not quite as long as it should be for the size and it doesn't come supplied with any convenient closure system. I've added a few grammes of elastic cord salvaged from retired backpacks which holds it in place under my sleeping mat but there's no sewn-in loop at the top of the bag so it's tricky to keep it wrapped snuggly around your neck & shoulders.Overall a very handy addition to my sleeping kit and will also be in the bottom of my winter mountain daypack for emergencies along with a bothy shelter or bivvy bag. Pricey compared to, say, the very practical  Snugpak Jungle Blanket, Black  which would serve a similar purpose on a budget but also quite a lot lighter and water resistant.

I brought this to use inside a bivy bag/tarp or my tent while backpacking/long distance walking in the summer. I love the fact it’s just over 500g and it’s waterproof and won’t get affected by condensation or wet weather. Getting down bags wet is just not fun, I don’t get on get with sleeping bags in warm weather, they are just too warm and restrictive.This quilt allows a more comfortable sleeping experience, more natural sleep - like being at home with a quilt. It does not absorb water, it’s warm, comfortable, a bit crinkly, but that’s because of the heat reflective material that keeps you warm. It packs small and squash’s even smaller.I am very happy with it, warm, comfortable, well made, lightweight and won’t absorb water - Perfect

Love the warmth of the blanket and that it is waterproof. I use it in my camper van as a top cover for my sleeping bag.

Blanket has a very good quality material, unfortunately it barely reaches 180 cm whereas the specs state 190 cm!!!Too short for me, i'm 6 f. I have to return it.Very disappointed