The heat source our customers ask for.
The same Hot Sacks air-activated hand warmers packed in every Upass kit, sold on their own as an 8-pack. Open the wrapper, shake, and they reach working temperature in minutes, then hold steady heat for hours. Keep spares on hand so your kit is never without a fresh heat source.
Hot Sacks Hand Warmers, 8-Pack
- Ships the same business day on orders by 3:00 PM PT, Monday to Friday. Tracking number emailed when it ships.
- The same warmers packed in every Upass kit. Hot Sacks branded, air activated, 8+ hours of heat each.
- Store sealed until needed. Open a wrapper only when you are ready to use that warmer.
Open, shake, strap it on.
Air-activated warmers need no microwave and no outlet, which is why two of them ride along in every Upass kit. This pack adds eight more.
- 1Open. Tear the wrapper and shake. Air activates the warmer and it reaches working temperature in minutes.
- 2Strap. Secure one against the bottle with the rubber band from your kit. A room-temperature bottle comes into the 90 to 100°F range in roughly 45 to 60 minutes.
- 3Hold. Confirm the range on the adhesive temperature strip and leave the warmer in place. Each warmer gives 8+ hours of heat.
Eight warmers, individually wrapped.
- 8 Hot Sacks air-activated hand warmers, each sealed in its own wrapper. Black pouch, orange flame design: the same warmer packed in every genuine Upass kit.
- Spares for the shelf. Every Upass kit already includes two. A spent or misplaced warmer never has to hold you up.
- No microwave needed. For long days, travel, and sites with no kitchen.
Every Upass kit already ships with two warmers.
If you do not have a kit, start there. Each kit includes the 3oz premixed bottle with the embossed Upass logo, two Hot Sacks hand warmers, an adhesive temperature strip, a dispensing cap, and a rubber band. Add this 8-pack when you want extra heat on hand.
Not on Amazon. Not at Walmart.
Upass is sold nationwide at authorized retailers, but not on Amazon or at Walmart. Online, upassurine.com is the only authorized store. We do not sell on any online marketplace, so a marketplace listing with our name on it is not ours.
Common questions
Are these the same warmers that come in the Upass kit?
Yes. Every standard Upass kit includes two Hot Sacks branded hand warmers. This is the same warmer, sold as a pack of 8.
How long does one warmer last?
Each warmer gives 8+ hours of heat once opened. Keep it secured against the bottle and confirm the range on the adhesive temperature strip.
Do I need a microwave?
No. With a warmer strapped on, a room-temperature bottle comes into the 90 to 100°F range in roughly 45 to 60 minutes. A microwave does the same job in about 5 seconds, but the warmer route needs no kitchen at all.
When will it ship?
It is in stock. Orders placed by 3:00 PM PT Monday to Friday ship the same business day, with a tracking number emailed when it ships.