Do they stay warm the full 18 hours (assuming 32 deg F ambient)? If not, how long?

I've used them for years and have always found them to work at least 12+ hours. Primary use has been in my sleeping bag when it's better 30°-40°F. Definitely a good buy in my opinion.

What is the typical expiration date? I bought this in January 2013.

The ones that I bought in April 2013 have an expiration date printed on them of Nov. of 2017. If you look at the description of the 'Hothands 40 Count' here on Amazon, it says "individually sealed in airtight packages to guarantee a shelf life of six years." I don't know personally how true that would be, because I use them all within months of getting them, but you could go to the Hothands website (Hothands.com) and see if they have any more info.. Hope this helps!

Is it 40 pairs as in 80 total or just 40?

It’s 40 individual pads. They are great!!

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HotHands Super Warmers Bulk Pack, 40 Warmers - America's Favorite Warmer | Economy Pack Size, Plenty to Share the Warmth-Air-Activated, Disposable, Long-Lasting for Skiing, Stadiums, Cold Weather

Product ID: 768580

Details

Brand
HotHands
Color
Tan
Material
iron
Recommended Uses For Product
Camping
Size
40 Pack

📦Bulk pack of 40 warmers

🔥Up to 18 hrs steady heat

🖐️Larger size for max coverage

¥22538

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔥 Stay unstoppable in the cold—warmth that works as hard as you do!

TRUSTED FOR 35 YEARS - America’s favorite hand warmer, relied on by contractors, athletes, and emergency responders nationwide.
ALL DAY WARMTH NO FUSS - Air-activated heat kicks in within 15-30 minutes, lasting up to 18 hours—stay warm from dawn till dusk.
BIGGER BETTER COVERAGE - Super-sized warmers deliver more heat exactly where you need it—ideal for outdoor pros and winter warriors.
STOCK UP SHARE THE HEAT - 40-pack bulk supply perfect for teams, families, or emergency kits—never get caught cold again.
SIMPLE SAFE SUSTAINABLE - Made with natural ingredients and disposable for easy use—warmth you can trust, anytime, anywhere.

HotHands Super Warmers Bulk Pack offers 40 large, air-activated disposable hand warmers that heat up quickly and provide up to 18 hours of consistent warmth. Trusted for over 35 years, these warmers are perfect for outdoor workers, athletes, and emergency preparedness, delivering reliable heat with simple, natural ingredients in a convenient bulk supply.

Specifications

ASIN	B0007ZF4Q8
Best Sellers Rank	#3,208 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #9 in Camping Hand Warmers
Brand Name	HotHands
Color	Tan
Customer Reviews	4.8 4.8 out of 5 stars (18,600)
EU Spare Part Availability Duration	18 hours
Global Trade Identification Number	00094733152433
Included Components	40 Super Warmers
Item Type Name	Hothands
Item Weight	4.7 pounds
Manufacturer	Kobayashi
Manufacturer Part Number	HH-1
Material Type	iron
Model Number	HH1ED240E-AMZ
Number of Items	1
Power Source	Air Activated Chemical Reaction
Recommended Uses For Product	Camping
Reusability	Single Use
Size	40 Pack
Target Use Body Part	Hands
UPC	094733152433
Unit Count	40 Count
Upper Temperature Rating	160 °F

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TrustScore 4.5 | 7,300+ reviews

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Customer service was outstanding when I had questions about the product.

2 days ago

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The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

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¥22538

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Japan.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

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Excellent communication throughout the order process. Product is perfect.

2 weeks ago

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