This Small Dog Vest Is Designed For Small Dogs With A Square Build And Short Stature Like Pugs, Boston Terrier, French Bull Dogs. The Soft Reflective Chest Strap Aids Against Throat Irritation While The Wide, Highly Visible Saddle Takes Pressure Away From The Neck. The Ultra Soft Girth Also Helps To Keep Your Pooch Comfortable While Strutting Their Stuff. harness Measuring 1) Front Measurement – From The Breastbone To The Middle Of The Back. 2) Girth Measurement – The Circumference Of The Dog At The Middle Of The Back. once You Have Your Measurements, See Dog Harness Size Chart : small – Regular Fit: #1 Front 8”-10” – #2 Girth 19”-27” – Approximate Weight Range 13lbs To 17lbs – Ideal Dog Harness For Boston Terrier, French Bull Dog, Pug, Bichon, Miniature Bull Terrier whats In The Box 1 Small Dog Harness 2 Removable Brilliantk9 Embroidered Patches colors: celebration crazy Hearts fototasmic galactic Splash mystic Moor optic Orange passion Fire red Rock Jaguar serengeti star Chief tribute tropic Treasure black Knight cobalt Blue cosmic Pink forest Green grape Purple lipstick Red neon Green neon Pink neon Yellow royal Purple safety Orange tahiti Blue