The SOL HeatSheets Emergency Bivvy: Absolutely the standard for emergency sheltering. This is an emergency Bivvy ("bivouac sack", or sleeping bag) that weighs only 3.8oz, and fits in the palm of your hand! Ideal for those occasions when you take a wrong turn and are forced to spend the night out in the elements. A must have in your pack for all your backcountry adventures. Made from metalized polyethylene -- these are much quieter, more comfortable, and far more durable than those old "space blankets", and really could SAVE YOUR LIFE!
Size: open: 36" x 84"
Note: top circumference is 72": bottom, 54 ": hips 63 ".
folded: fits in the palm of your hand!
Reflects: 90% of body heat