snow pants with a 100 % recycled outer material with the best features for long days on the mountain. the build up pants from the north face bring casual street style to the mountain. their wide cut and elasticated waistband are reminiscent of the trendy tracksuits of the 90s. what is not at all reminiscent of the old days is the technology. the recycled nylon outer material comes with a seam-sealed dryventâ„¢ 2l outer material and the lining is made from 100 % recycled polyester. these snow pants will keep you comfortable, sustainable and dry throughout your days on the mountain.