X-Large - 18-22" chest girth / 14-16" neck girth / 15-21 lbs. Please follow our size chart to measure your pet. If your pet's size is at the end of border, choose one size bigger. POLKA STYLE - Hottest girlish/ladies DOTS design, added with lace makes your puppy or cat lovely and cute COMFORTABLE TO WEAR - Mesh padded polyester, breathable and soft ADJUSTABLE - Strong closure, adjustable to the most comfortable size SPECIAL SET - Included with Webbing Nylon Leash with metal clip,buckle and hoop design and Cute Knit Bow-knot Puppy Pet PU Leather Collar Cute Small Dog Harness, Ladies Polka Dots Dog Vest Harness Set with Pink Leash and Bowknot Collar, 3 in 1 Girl Style Vest Harness Set for Puppy and Cat