Zig zag grooves in forefoot to assist in toe-off

flexible outsole suitable for everyday wear

Female Sprint Spike suitable for 100m to 400m

This version adds an EVERUN topsole

Engineered mesh upper for comfort and breathability

Swiftwick Aspire Sock Zero (No Show) Socks Zig zag grooves in forefootSwiftwick Aspire 200 running socks feature: Managed Compression proven to reduce swelling, improve circulation and increase endurance Sculptured Footbed and Seamless Toe assuring maximum comfort and a blister free sock even for the most sensitive feet Moisture Management antimicrobial materials designed to wick away moisture without the use of chemicals 200 needle construction for longer lasting and better fit. Zero height fits below the ankle.