Zee Dog Skull 2.0 | CollarMade of soft and resistant polyester, our collars are smooth on the fur, fully adjustable and come with a buckle built with a 4 point lock system for added safety. Includes all black metal hardware. XS: Width 0. 4", Length 9 13" (1cm, 23 33cm) S: Width 0. 6", Length 12. 2 17" (1. 5cm, 31 43. 2cm) M: Width 0. 8", Length 14. 5 20. 8" (2cm, 36. 8 52. 8cm) L: Width 1", Length 17. 7 27. 5" (2. 5cm, 45 69. 8cm)