The Wrightsock Coolmesh II Tab Low Sock is the lightest double layer sock that Wrightsock makes. This sock is great for all of your warm weather outdoor activities. Lightest Double Layer style WRIGHTSOCK makes. Added a Stabilizer Zone and more Lycra to make the sock more contoured. Versatile Multisport with Contoured Fit Run, Hike, Walk or Bike with Cool Dry Feet. No Blisters Guaranteed Inner Layer: 70% Dri WRIGHTll Polyester, 30% Nylon Outer Layer: 71% Dri WRIGHTll Polyester, 24% Nylon, 5% Lycra.