Flashing Light

SPECIFICATIONS XS = Width 1.5cm/0.59" x Chest Length ( 30 - 35 cm) /(11.81"-13.78")    S = Width 2.0cm/0.79" x Chest Length ( 32 - 37 cm) /(12.6"-14.57")    M = Width 2.5cm/0.98" x Chest Length ( 38 - 46 cm) /(14.96"-18.11")    L = Width 2.5cm/0.98" x Chest Length ( 46 - 55 cm) /(18.11"-21.65")  XL=    Width 2.5cm/0.98" x Chest Length ( 58 - 62 cm) /(22.83"-24.41") You can adjust the length 1-5CM（0.39-1.97inch） How to choose the correct size? Please measure your pet's maximum bust, reserve 2-3cm (0.79-1.18inch), and then choose the appropriate product. If it is between the two sizes, it is recommended that you choose a larger size, the product is adjustable.