Size of S(width,neck):1 cm/0.39",19.2 cm/7.56"-33 cm/12.99"
Size of M(width,neck):1.5 cm/0.59",24 cm/9.45"-41 cm/16.14"
Note:color by random
1.Product color pattern is random.The using time of the product is guaranteed for 60 days
2.The product is rubber except flea ring with good air permeability,so the dogs are willing to wear it.Rubber material is safe and non-toxic material,so the item will never be harmful to your dogs. 3.Products can be used for size dogs