Features of Smartwool Men's Cycle Zero Cushion Crew Sock 4 Degree elite Fit system for a dialled-in, Performance-oriented Fit Shred Shield Technology reduces wear from toes Mesh zones for added breathability Virtually seamless toe for enhanced comfort Overall 8" height Height: Crew Zero cushion Fabric Details 54% Merino Wool 14% Nylon 28% Recycled Nylon 4% Polyester 54% Merino Wool 14% Nylon 28% Recycled Nylon 4% Polyester