RuffWear Dog Backpack

Thanks to its adjustable straps, this backpack fits dogs of various sizes and shapes.Waterproof zippers, reflective trim, and various fabric loops help keep items secure and organized, even when your dog romps through different terrains. SizeXXS: Chest circumference 30-48 cm (12-19 in) and volume 2 liters (0.53 gallons)XS: Chest circumference 43-61 cm (17-24 in) (in turquoise 43-56 cm) and volume 5 liters (1.32 gallons)S: Chest circumference 56-69 cm (22-27 in) and volume 9 liters (2.38 gallons)