Features & Details: REVERSIBLE, REFLECTIVE, & ADJUSTABLE: Stylish reversible dog vest is perfect to keep your dog cozy during chilly fall months & cold winter months when out on walks, hikes, & runs; reflective piping for visibility in the dark; adjustable hook & loop belly closure for custom fit WATER RESISTANT & LIGHTWEIGHT: Just the right amount of coverage to keep your active dog warm without overheating; athletic fit for complete freedom of movement; water resistant, microtomic, ripstop material for durability & doesn't make dog itchy like other jackets WEAR WITH HARNESS: Leash access zipper opening on back allows complete access to dog's harness so you can attach a leash & go; Easy on & off is perfect for walking, running, or hiking during colder months; Machine wash gentle, air dry SIZE & FIT: X-Small fits dogs with 12" neck, 15-17" chest, and 10" back.