?? on re usable handwarmers

[phil]

does anyone use the usb rechargeable handwarmers or is everyone still using zippos? if so, are they worth the extra $$? my 6 year old is really excited to get on the ice, last year we were limited by how cold his hands would get. I want to get him real handwarmers, not the disposable packs that I always forget at home and wind up buying at the bait shop for 10X the amazon price lol.