Keeping glucose meter warm while Apline Skiing

My 12 year old daughter is a ski racer who has just been diagosed with Type 1 Diabetes. She is trying to find ways of keeping her glucose meter & test strips warm while training all day. Keeping them in an inside pocket of her jacket does not work & it will only get colder. Any suggestions?

I have a friend who loves to take her snow mobile out on long rides. She tucks hers in her bra.

Thanks Dave & Ron - this is helpful!