Run 1/4 Ultra-Lightweight with Cushion Size:M the Pro Issue is waterproof

the Pro Issue is waterproof with a IPX7 rating and fogproof with nitrogen-filled internal chambers

Upper and rear T-tracks are for fast installation/removal of accessories

form-fit and is designed to work best on low-to-mid volume running shoes

or your next adventure off the beaten path

Run 1/4 Ultra-Lightweight with Cushion Size:M the Pro Issue is waterproofWhen the trail calls, this cushioned Quarter answers. Reinforced with a rugged cuff that never falls flat, there's no terrain this Run sock can't handle. Knit to go the distance (and then some), slip your foot in and experience the blister free fit of moisture wicking Merino Wool that's made to move you.