WrightSock’s Double Layer Coolmesh II Tab Socks are a lightweight premium performance sock featuring a mesh panel for added breathability and Dri-Wright II™ fabrication to keep you feet cool and dry during the most high intensity workouts. The patented Double Layer Anti-Blister System™ eliminates blisters for the most comfortable fit possible. Outer Layer: Lightweight Dri-WRIGHT™ II with mesh panel for maximum breathability and maximum moisture control. Inner Layer: Smooth, undyed, hydrophobic Dri-WRIGHT™ II wicks moisture away for cool, dry feet. Stabilizer Zone™ around the midfoot promotes “stay in place” comfort. Interaction between layers absorbs friction, preventing blisters. Two layers trap air for effective insulation from heat and cold. Patented third attachment keeps socks properly aligned. Y pocket in heel provides a proper fit. Year round comfort and performance – No Blisters Guaranteed. Lightweight design with mesh panels for maximum breathability. Low-cut for individuals who prefer a below the ankle sock height. No show construction with padded tab on back for Achilles protection. WrightSock™ Guarantee: Money back or sock replacement if you experience blisters or are not 100% satisfied with the performance of this sock. Simply return the socks with the original sales receipt and proof of purchase to Wrightenberry Mills, Inc. at 910 Cle veland Avenue, Burlington, NC 27217.