Just saw this, looks good https://www.amazon.com/dp/B001G7QKU0/?tag=cl03f-20&psc=1&smid=ATVPDKIKX0DER
Decent Price!
Just one side thing about these..
6 pairs of toe warmers per pack
Up to 8 hours of heat per pair
Air Activated
Safe, Natural heat
Adhesive keeps the product in place
Seems that there's 6 per pack and once opened you activate them all so that's a bummer.
Unless your going skiing with 6 people, or give 6 of your kids the warmers at once!
But still a decent price!