Picked these gloves as they were the only battery heated gloves I could find with leather palms.
Pleasantly surprised when they arrived, quality is better than my BMW winter gloves and as good as you will find. Leather quality is superb.
Sizing is large so follow the guide on their site, they are true to size but their XL is bigger than a BMW XL.
Initially there was a problem with one battery, it was replaced by express post as soon as I made contact without even the requirement to return the US one.
Gloves work well - if you let them preheat for a few minutes on full heat they will warm up the coldest of fingers and then medium heat will maintain the temperature even on the coldest of days, so battery life is good .
These gloves are priced at the premium end of the market but I think the quality, service and performance amply justify the price.

Approximate cost: $238