●Made with lightweight durable and highly breathable elastic lycara fabric. ●Simple one-piece design slips on and off your shoes quickly.With adjustable drawcord on the top,A bomb-proof strap under the foot,durable and strong. ●Reflective details for increased visibility during night and early morning runs. ●Applicable scene:Cross country,Mudproof,Sandproof,Snow prevention,Insect prevention,Scratch proof ●One Size fits :(EU Size) 36 to 43;(US Size) 5.5 to 9.5;(UK Size) 4 to 8.5