Extra Small (1 - 10 lbs)

E.g., Yorkie, Chihuahua, Pomeranian, Maltese

Small (11 - 25 lbs)

E.g., Shih Tzu, Pug, French Bulldog

Medium (26 - 40 lbs)

E.g., Beagle, Schnauzer, Scottish Terrier

Large (41 - 70 lbs)

E.g., Boxer, Bulldog, Cocker Spaniel, Doodle

Extra Large (71 - 90 lbs)

E.g., Retriever, German Shepherd, Rottweiler

Steel

The most durable and secure