Weather can make or break a camping trip, I was camping with the Scouts and with it being June I packed my summer sleeping bag. I arrived on site and the Sun was out so I was confident I had made the right selection, then as the afternoon turned to evening the rain came and the temperature dropped. A few hours later I climbed into my sleeping bag and settled down for the night, I woke in the early hours of the morning feeling very cold and after answering the call of nature I started shivering a little. I had already layered up before going to bed so I grabbed the Heatsheets Emergency Bivvy from my pack, I unwrapped it and climbed into it and then got back into my sleeping bag.
It only took a few minutes to feel the benefit of its heat-reflective polyethylene construction and I drifted back off to sleep, as it is not breathable I expected to wake in the morning saturated. I found that I only felt clammy, which I would be more than happy with if I was using this in an actual survival situation. I liked the feeling of space inside, its small size and weight when packed, the seams being fully sealed and weatherproof.
This product did everything I expected it and needed it to, so for that I give it 10 out of 10.