Mens Norvan 4 Nivalis Grotto - Dk Solitude/Dk Solitude Size:US12 Sweat-proof phone pocket

Sweat-proof phone pocket

Multi-channel optical sensor

Anti-chafe raised collar

The most drastic change of this design is the midsole

Sleeveless design

Mens Norvan 4 Nivalis Grotto - Dk Solitude/Dk Solitude Size:US12 Sweat-proof phone pocketTake on winter trails with the Arcteryx Norvan 4 Nivalis Grottobuilt for cold, wet runs when traction and waterproofing matter most. The GORETEX Invisible Fit upper keeps water out while staying breathable, and an integrated over ankle gaiter adds coverage for snow, slush or puddles. A dual density midsole balances firm protection with natural ground feel, while the Vibram Megagrip outsole with Litebase technology and 6 mm lugs bites into slippery