Dogs Mouth Rope Gentle Halter Leash Leader Pet Mouth Traction Set Adjustable Head Collar Pet AccessoriesSize chart: Size(cm)S Circumference of the dog mouth: 8~20 Circumference of the dog neck: 28~35 Length of the leash: 20 M Circumference of the dog mouth: 10~25 Circumference of the dog neck: 33~40 Length of the leash: 24 L Circumference of the dog mouth: 12~30 Circumference of the dog neck: 38~50 Length of the leash: 27 XL Circumference of the dog mouth: 15~34 Circumference of the dog neck: 43~58 Length of the leash: 31 2XL Circumference of the dog mouth: 18~38 Circumference of the dog neck: 48~65 Length of the leash: 35Size(inch) S Circumference of the dog mouth: 3.15-7.87 Circumference of the dog neck: 11.02-13.78 Length of the leash: 7.87 M Circumference of the dog mouth: 3.94-9.84 Circumference of the dog neck: 12.99-15.75 Length of the leash: 9.45 L Circumference of the dog mouth: 4.72-11.81 Circumference of the dog neck: 14.96-19.69 Length of the leash: 10.63 XL Circumference of the dog mouth: 5.91-13.39 Circumference of the dog neck: 16.93-22.83 Length of the leash: 12.2 2XL Circumference of the dog mouth: 7.09-14.96 Circumference of the dog neck: 18.9-25.59 Length of the leash: 13.78Friendly Tips:1. Please kindly allow 2-3% difference according to manual measurement. 2. Please check the measurement chart carefully before you buy the item (1 inch = 2.54 cm). 3. Please note that slight color difference should be acceptable due to the light and screen. Thanks.Specification: Material: Nylon Color: As picture shown Style: Fashion Application: Small and medium sized dogs Size: S, M, L, XL, 2XLPackage Contents: 1 * Pet Mouth Traction SetPromise If the product has any quality problems, please feel free to contact us, we will help you solve the problem as quickly as possible.