Glacier Grips Shoe Chains Medium (5 1/2-8m), (6 1/2-9 1/2w) Boot traction for any weather! Aggressive ALL-METAL spikes and chain links for maximum outdoor traction and durability Easy-on & Easy-off design Great for slick icy sidewalks, porches, stairs, slopes, inclines, and driveways Durable elastic rubber keeps them in place