Step in style for dogs who aren't comfortable with harnesses that go over their head Its easy step in, wrap around design keeps the dog feeling snug and secure, while the hook and loop closures save your hands from finicky tiny buckles Made with a soft breathable air mesh fabric Easy hook & loop closure Woven Binding provides durability. Durable hardware resists wear Size Large measurements: Neck opening: 11 - 13 Inches, Girth: 18 - 20 Inches