Snowboarding jackets have indications of how well they breath and how waterproof they are. The breath-ability is indicated with a g or gm, for example 10,000g would mean the pants do a good job of circulating the air. The waterproofing is indicated with a mm. The higher the number of mm & g the better they do their job.
If you are riding in a dry climate like Colorado you would be fine with something like 3,000g & 3,000mm. But still 10,000g/mm would be best. In really cold temperatures, like in the Northeast, buying snowboarding pants with a high mm & g are recommended, but also find the ones that come with a removable liner for the extremely cold days.
RETURNS/EXHANGE