Outrek 2 Electric Heated Insoles- Rechargeable Battery, Remote Controlled, Foot Warmers Fit Men and Women Shoes and Boots for Hunting, Skiing, Work. Heavy Duty and Comfortable by Anseris

I purchased this product for steelhead fishing to put in my waders to keep my feet warm ,however if you turn them to high ,there is barely any warmth at all. In fact one cannot tell there is any difference with or without them .

Fully charged them upon arrival. Turned them on placing my feet on them for 10 min. I could barely feel the heat on high. I put socks on and the insole heat could not be felt, even after putting a boot on. Do not waste your money, you can stomp your feet on the ground and get them warmer then these insoles.