i dont know much about snowpants and was wondrin what it means when it means when it says 10,000mm and 15,000g? and also, which fabrics gonna be the most waterproof?
the mm number represents the degree of waterproof of the pants. 10,000mm is quite waterproof and is more than enough unless you are riding often in rain or really wet powpow.
the g number represents the degree of breathability the pants will have. the greater the number, the less breathable and the hotter they will be. 15,000g will be pretty warm in all conditions.