The Zero Degree thermal blanket has a Mylar metallic liner that captures and circulates your own body heat. It's designed to keep you comfortably warm whatever the ambient temperature. With the Zero Degree blanket you can turn down the thermostat or keep warm in bed while your partner stays cool. Soft and wonderfully lightweight, the blanket fits perfectly under your fitted sheet or on top of your bed. Plus, it's great for wrapping around you when snuggling on the sofa. Its also water- and snow-resistant, so you can use it for outdoor events, sports and camping. Keep it in your car or rucksack for emergencies as well. mysmartbuy Zero Degree Ultimate Heat Retaining Blanket - 146 x 94cm Soft, Lightweight, Reversible & Water-Resistant Polyester Fleece Throw