As featured in Runner's World, T3 and Cosmopolitan Reflective yarn woven into the cuff – helps you stand out when illuminated by headlights on early morning and evening runs Lycra bands for a secure fit – keep the socks snug and comfortably in place as you move Ultra-thin construction – provides a lightweight, close-fitting feel without added bulk Ventilation channels on the upper foot – encourage airflow and help release heat and moisture to keep your feet cool and dry Added Lycra arch support – creates a supportive fit around the arch for lasting comfort Technical fabric blend – combines 88% polyamide, 8% Lycra and 4% Flash for durability, flexible stretch and reflective performance Colour: Pink, Yellow, Black; Size: 4-6, 6.5-8.5, 9-11