+Probiotic BC30: 1 billion active cultures per serving

38 hours of GPS activity tracking

Filling at collar: 100% Polyester

You don’t need to see much to get the most out of this Ultra-Lightweight running sock

the quick-drying fabric and the purposely designed K-Protect knee tab designed to reduce shock and combined them with even more revolutionary details

Smartwool Women's Run Zero Cushion Pattern Crew Socks Color:-H76 +Probiotic BC30: 1 billion activeStay light on your feet with zero cushion Merino socks designed for speed and comfort. Our durability technology helps keep them going, while a womensspecific fit helps minimize blisters so you can maximize miles. Features: Women's specific fit features a narrower heel shape Indestructawool durability technology is knit into high impact wear zones 4 Degree Elite Fit System offers a performance fit with strategic stretch and mesh zones Shred Shield