Used a set of thermal technology pro warmers today.

They got hot quick!

The rim was warm within half an hour and the quality of them is probably the best out there.

I've had capits before and chicken hawks, these are definitely a step above.

Got a really useful handle to pull them off in one motion, they've got a neoprene skirt and they come in a handy bag too.

Used by a lot of motogp teams and the heating elements are carbon, have had a lot of feedback that these perform very consistently and last ages.