Trudz Pet (Rdc Pet) - Your Pet's Ever Breathable & Soft cotton/polyester fabric, and blend soft fleece interior makes your dog have a warm autumn and winter.easy-care,machine washable for this pet hoodies. Classic & Fashion adidog sweater style makes your dog more active, Just like a sporting star in the pet world.More Lovely, More Clever and Cute,more Pleasantly warm, Just for your pet. Various choice of sizes, Mainly for Large dogs and medium dogs. Please don't choose size according to a usual size,but to measure your pet's neck girth ,chest girth and back length (especially the chest girth) and choose the correct size according to our size chart. If your pet is growing,please choose a larger size. Size Chart: 3XL-- Back length: 17.7 inch(45 cm), Chest girth: 25.6 inch (65 cm), Neck girth: 15.7 inch(40cm)4XL-- Back length: 19.7 inch(50 cm), Chest girth: 27.6 inch (70 cm), Neck girth: 18.1 inch(46cm)5XL-- Back length: 21.7 inch(55 cm), Chest girth: 29.5 inch (75 cm), Neck girth: 19.7 inch(50cm)6XL-- Back length: 23.6 inch(60 cm), Chest girth: 31.5 inch (80 cm), Neck girth: 20.9 inch(53cm)7XL-- Back length: 25.6 inch(65 cm), Chest girth: 33.5 inch (85 cm), Neck girth: 21.7 inch(55cm)8XL-- Back length: 27.6 inch(70 cm), Chest girth: 35.4 inch (90 cm), Neck girth: 22.8 inch(58cm)9XL-- Back length: 29.5 inch(75 cm), Chest girth: 37 inch (94 cm), Neck girth: 24.4 inch(62cm)