Amazon.com: Emergency Sleeping Bags for Survival - Lightweight and Compact Bivy Sack for Sleeping Bag or Emergency Blankets for Survival - Emergency Bivy Bag for Winter Survival Kit or Survival Bag :
Awmark Emergency Survival Sleeping Bag 79x35" Thermal Blanket Ultra Lightweight Compact Survival Bag Reusable Shelter Survival Kit with Storage Bag for Outdoor Camping Hiking - Walmart.com