The New Blue Polka Dot Dress is right in step in the new colors of Spring. Great for everyday wear, light weight and fun design. Comes complete with matching leash and D-Ring. Important Sizing Note: The measurements provided are the dimensions of the actual product, not of the pet they fit. After measuring your pet, make sure all measurements fit within the dimensions provided (with a little room to spare in the chest and neck). Size: X-Small - Back Length 8" Chest: 10"-13" Neck: 7"-10" Weight (Lbs): 3-5; Size: Small Back Length 10" Chest: 13"-16" Neck: 10"-12" Weight (Lbs): 6-10; Size: Medium Back Length 12" Chest: 16-19" Neck: 12"-14" Weight (Lbs): 11-15; Size: Large Back Length 15" Chest: 19"-22" Neck: 14"-17" Weight (Lbs): 16-25.