[cypher]

Last winter I had to do some vet trips in cold weather so I used a snugglesafe pad, (not fully heated as that would be too hot so you could either let it cool for a while or just heat it for a shorter time) I put the pad in the bottom of a large bag with the carrier (plenty of substrate inside) on top, I would put the carrier on top of the pad for a while before leaving so the whole carrier could get nice & warm & my hams were fine, nicely & snuggly till we got home again.