These rugged and comfortable booties are made for rough terrain, reinforced with 1000D nylon. The booties has an elastic velcro that assures a perfect fit on any dog`s paw. Solid socks are ideal for workouts on dryland and gravel. The inner lining is soft nylon, while the outer shell is a durable 1000 D tightly woven nylon. Booties do get worn, but Solid socks is long-lasting. Features: Soft nylon inner lining Reinforced 1000 d tightly woven nylon Elastic velcro 4-pack Weight: 20 grams (1 sock, size XL) Max 30°C washing machine, do not tumble dry. Size chart Size XS S M L XL Paw width 4-4.99 cm 5-5.99 cm 6-6.99 cm 7-7.99 cm 8-9 cm Dimensions Size XS S M L XL Weight 11 g 14 g 17 g 19 g 22 g Weight (4-pack) 47 g 57 g 67 g 78 g 90 g Width 7 cm 7.5 cm 9 cm 9.5 cm 10.5 cm Height 10 cm 11.5 cm 12 cm 14 cm 15 cm