My horse is very sensitive in the neck. I've been looking for something that the pressure is better distributed and also not as ugly looks like lambskin - or not so thick plotting. The headpiece fits very well to the Snaffle. The Velcro straps firmly and close hair also caught not in it. Whether a significant heating effect is noticeably I can not say. The welding image under the headpiece is uniform. The headpiece also does not chafe but is good at.
I would recommend this product highly.
One star deduction there, because I would have liked the product description a little more "effect" - which, however, nothing was noticeable - so the horse went through the rest no better on the bit as without.