The Pet Life ® Active 'Chewitt Wagassy' 4-Way-Stretch Yoga Fitness Long-Sleeve Dog T-Shirt features specially engineered Stretchy fabric that are Lightweight and Permeable resulting in a well Ventilated system that is specially developed to maximize Mobility and Breath-ability. Features 4-Way Stretch Technology that moves better in every direction with a customized relaxed fit without the squeeze and won't bunch up. The side of the body and arms feature a lighter blend of fabric for strategic ventilation. Features Quick-Drying properties that dries extremely fast while offering Anti-Odor technology that prevents odor causing microbes. The Chewitt-Wagassy Long Sleeve T-shirt also offers UV Protectaion against the suns harmful rays and fitted perfectly to help assist in containment or collection of shedded hairs. This Dog T-shirt is perfect for performance fitness and outdoor dog yoga Activities. Features Dual Reinforced stitching at every seam for durability with a convenient zippered design with protective zipper flaps preventing the pet's hairs from getting caught within the zipper tracks. Additionally this T features Reflective Taping for added night visibility and a Leash Slit along the back. Machine Washable. This style is part of our Pet Life ® Activewear Collection. Available in Multiple Sizes and Colors. SIZING SPECIFICATIONS - In (Inches) "Back" Length is from Neck to Tail - * See image chart for sizing approximation EXTRA SMALL - Back - 9.5" Chest - 13.5" Neck - 12.5" Sleeve - 4.5" SMALL - Back - 11.5" Chest - 16.5" Neck - 13.5" Sleeve - 5 MEDIUM - Back - 15" Chest - 20.5" Neck - 15.5" Sleeves - 5.5" LARGE - Back - 18.9" Chest - 25.5" Neck - 17.3" Sleeve - 6.1" EXTRA LARGE - Back - 22" Chest - 30.5" Neck - 19.8" Sleeve - 7"