• THERMO-S1 Family Pack — 65% OFF
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★★★★★ Excellent 17,000+ Reviews

THERMO-S1 (Family Pack)

THERMO-S1 (Family Pack)

Cold is the quiet killer in any emergency. Five THERMO-S1 bivys mean every person in your household has warmth locked in when the heating stops.

  • 5× THERMO-S1 Emergency Bivy
  • Reflects up to 90% of your body heat back to you
  • Windproof & waterproof — works stranded, evacuating or at home
  • One per person — built for a family of five
Low Stock Warning — Next restock: August 1st 2026
EVERY ORDER INCLUDES:
The Ultimate Survival ebook
The Ultimate Survival ebook
Essential crisis skills & self-reliance made simple.
$30FREE
Food Storage Guides & Workbook
Food Storage Guides & Workbook
Simple checklists to organize food, supplies & storage.
$20FREE
16 Emergency Prep Checklists
16 Emergency Prep Checklists
Covers everything needed for major emergencies.
$15FREE
Total value $65 — yours FREE with every order
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5,000L / 400-Gal
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VISAMASTERCARDAMEX
★★★★★

"Five in the house, one per person, all in a labelled bag. We lost power for three nights last winter and the kids stayed toasty. Cheapest insurance I've ever bought."

Andrew P., Ballarat VIC✔ Verified Buyer
Product Description
When the heating stops, warmth becomes survival. Blackouts, storms and evacuations don't wait for mild weather. Losing body heat overnight is one of the real dangers in any emergency — and it happens faster than most people think. A full-body shelter for everyone. Each THERMO-S1 bivy is built from heat-reflective material that sends up to 90% of your body warmth back to you. Windproof, waterproof, and ready whether you're stranded on the road, evacuating, or riding out a cold night at home without power. Five bivys means every person in the family has their own. Each weighs almost nothing, packs to palm-size, and never expires.
Shipping Details
Here is how our shipping process works. • Processing Time: 1–3 days • Cost: 100% FREE! Once shipped, you'll receive a tracking number so you know where your order is at all times. • Estimated Delivery: Most orders arrive 5–7 business days after being handed to the carrier. Need Help? If you have any questions about your order, contact us and we'll respond within 24 hours.
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Read What Our Customers Have To Say

★★★★★

Warm Through the Blackout

Storms knocked our power out for three nights last winter and the whole family climbed into these. Genuinely warm within minutes while the house dropped to single digits — the kids slept fine.

Andrew P., Ballarat VIC✔ Verified Buyer
★★★★★

Packs Down to Nothing

Keep one in each car and one in the camping tub. Weighs almost nothing, and I've stopped worrying about getting caught out on a cold night on the road.

Megan F., Newcastle NSW✔ Verified Buyer
★★★★★

Cheapest Insurance I've Bought

Tested one on a winter camp expecting rubbish for the price. Reflective inside, blocked the wind, stayed toasty. Ordered more for the relatives.

David R., Brisbane QLD✔ Verified Buyer

Lifetime Warranty: Every piece of Ballast Supply gear is guaranteed for life against manufacturing defects — if it ever fails to perform as promised, we'll replace it free, no questions asked. We build gear that works when your life depends on it, and we stand behind that promise forever.