SAYSKY Reflective Combat High Socks Black Sock Size:7-11 Energy capsulated in a natural

Energy capsulated in a natural hydrogel

With a snug fit

Optical heart rate sensors work best when they're held securely against the skin

When fractions of a second matter

SAYSKY Reflective Combat High Socks Black Sock Size:7-11 Energy capsulated in a naturalThe SAYSKY Reflective Combat High Socks are designed to look cool and make your run super effective on all distances. Put these on and your feet have never felt so in sync with your shoes. These are high calf socks in a reflective black universe print and with a SAYSKY logo at the top. Reflective high calf performance socks for all distances. 69% polyamide 21% polyester 8% elastodiene 2% elastane. Very breathable socks that allow efficient air