Everyday life can be busy and hectic. When you want to end the day with your dog by walking down the street cool and smooth without any rush, then CASU2 harnesses is the choice. MATERIALS - Regenerated polyamide from fishing nets .Regenerated polyester from plastic bottles Inside ECO foam Accessories ocean waste recycled plastic Products containing SEAQUAL® YARN. FUNCTION Comfortable casual harness. SIZE chart the most important is to measure that the harness fits the chest (B). BREEDS XS: Jack Russell, Parson, Sheltie, Border Terrier S: Parson M: Spanish Water Dog, Irish Terrier, Border Collie L: Dobermann. Size Neck (A) Chest (B) XS 25 - 38 cm 36 - 43 cm S 31 - 50 cm 43 - 56 cm M 43 - 55 cm 56 - 74 cm L 53 - 75 cm 72 - 90 cm XL 68 - 89 cm 80 - 100 cm.