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 :
Emergency Survival Sleeping Bags « SurvivalSchool.com- Midwest Native Skills Institute
Amazon.com : ELUTENG Emergency Sleeping Bag with Whistles 2Pack Waterproof Survival Sleeping Bag Compact Lightweight Thermal Emergency Blankets for Hiking, Camping, First Aid Kits, Outdoor Adventure : Sports & Outdoors