SFNet New Fashion Pet Dog Vest Costumes Summer Cooling Cotton Adidog Dog Clothes Clothing Apparel SIZE S:Back length 20 cm;Chest circumference 32 cm;Neck circumference 23 cm; SIZE M:Back length 25 cm;Chest circumference 37 cm;Neck circumference 26 cm; SIZE L:Back length 30 cm;Chest circumference 44 cm;Neck circumference 29 cm; SIZE XL:Back length 35 cm;Chest circumference 49 cm;Neck circumference 32 cm; SIZE XXL:Back length 40 cm;Chest circumference 55 cm;Neck circumference 35 cm.