HuaYang Emergency Wild Survival Gear Kit Thermometer Compass Whistle + Mylar Thermal Blanket Emergency Blanket: Remains/Reflects 90% of body heat; Provide compact emergency protection in all weather conditions. 3 in 1 multi-function :whistle, themometer, compass Temperature range: -20~50 degrees Celsius This Combo Pack Includes: 1* Whistle + 1* Emergency Blanket Perfect & Essential kit for Camping Hiking Wild Survival Tools