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This is the best Emergency Blankets in the marketplace with cheap price that you can easily afford.
S.O.L. Survive Outdoors Longer S.O.L. 70% Reflective Escape Bivvy, Green Reviews:
Bivvy blanket measures 84 x 31 inches, and weighs approximately 8.5 ounces
Reflects 70% of your body heat back to you to prevent heat loss and trap warm air
Waterproof seams and drawstring hood let’s you seal out the elements
Features a quiet, tear-resistant material that won’t shred to pieces if punctured
Reusable bivvy can easily be used as a sleeping bag or emergency blanket for multiple adventures

S.O.L. Survive Outdoors Longer S.O.L. 70% Reflective Escape Bivvy, Green

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