Here's a simple step you can take to help keep feet warmer in ski or snowboard boots...as well as in other winter footwear.
Slip these thin reflective insoles under your existing footbeds (or under the inner ski boot if you prefer), where they help reflect heat back up to your feet.
Their ultrathin design won"t affect boot fit, and they are easily trimmed with scissors to match the exact shape of your existing footbeds up to size 15.