1. Please measure your pet's neck size before ordering! 2. Bow ties are not machine washable but can be removed from dog collar and rinsed with water and mild soap. 3. If your dog's neck is between two sizes, please choose the larger size. Dog Collar Size: S: Width 2.0 cm(0.79 inch) fits neck size 20cm - 29cm(7.87- 11.4 in) M: Width 2.0cm (0.79 inch) fits neck size 27cm - 41cm (10.62-16.14 in) L: Width 2.5 cm (0.98 inch) fits neck size 33cm - 52cm (12.99-20.47 in) XL: Width 2.5cm (0.98 inch) fits neck size 37cm - 60cm (14.56-23.62 on) Dog Leash Size: S: Width 2.0cm (0.79 inch) Length: 120cm (47 in) M: Width 2.0cm (0.79 inch) Length: 120cm (47 in) L: Width 2.5cm (0.98 inch) Length: 150cm (59.06 in) XL: Width 2.5cm (0.98 inch) Length: 150cm (59.06 in) Bow Tie Size: ​10*6cm ( Fit for size S and M dog collar) 11.5*6cm ( Fit for size L and XL dog collar) Buckle selection: Black, Gold, Rose Gold and Silver, please put in personalisation. Most of our leash could be customized, if you need a longer leash, please talk to us for different options.