When your clothes aren't enough

It gets very cold out on the slopes. And as important as your fleeces, jackets and gloves are for keeping you warm and comfortable, they won't always be enough. Which is why you should invest in some extra warmth for your hands and feet, should you ever need it.

So how do they work?

Simple: you just open them, shake them and put them in your gloves, shoes, or wherever else you're feeling the cold. Think of them as smaller, lighter hot water bottles.