Thermal Protection & Emergency Blankets

Hypothermia can develop in temperatures well above freezing when combined with wind, rain, or wet clothing. Our thermal protection collection includes mylar emergency blankets that reflect 90% of body heat, waterproof bivy sacks for overnight shelter, multi-pack thermal blankets for family and vehicle kits, and insulated emergency sleeping bags rated for sub-freezing conditions.
Understanding thermal emergency gear: Emergency blankets are single-use heat reflectors that pack down to the size of a wallet. Bivy sacks provide waterproof shelter and heat retention for overnight situations. Sleeping bags offer the highest warmth but take more space. For vehicles, keep at least one blanket per seat plus a bivy sack in the trunk.
Read our emergency blanket and warmth layers guide for layering strategies. Combine thermal gear with a 72-hour kit for complete cold-weather readiness.