The Pet Life ACTIVE 'Fur-Flexed' Solid Polo T-shirt features a Medium-weight Superior-Stretch Diamond Stitched fabric that is specially treated to provide exceptional stretch resulting in extreme Mobility. This material is specially Micro-threaded that looks and feels like cotton and dries much faster and is superior in Breath-ability with full body Ventilation. The Fur-Flexed Polo is also medium-weight that cools and heats by maintaining performance body control. This material also Features Memory-stitching and 4-Way Stretch Technology that moves better in every direction with a customized fit that's further than next to skin or Fur without the squeeze. Features Quick-Drying properties that dries really fast, while offering Anti-Odor technology that assists with odor causing microbes. This Dog Polo T-shirt is also UV Protect-ant against the suns harmful rays and precisely fitted to help assist in containment or collection of shedded hairs. Design features Tex-lock and Dual stitching at every seem for durability with a Pull-Over design for easy on and off access with buttoned trims and a durable accented Rib-knitted fashion collar and sleeves with Reflective-Taping for added night visibility. Machine Washable. This style is part of our Pet Life Active-wear 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: 9.3" Chest: 15.3" Neck: 11.3" Sleeve: 5.9" SMALL: Back: 11.3" Chest: 18.3" Neck: 12.3" Sleeve: 6.3 MEDIUM: Back: 14.3" Chest: 22.3" Neck: 14.3" Sleeves: 6.6" LARGE: Back: 18.3" Chest: 27.3" Neck: 16.8" Sleeve: 7.3" EXTRA LARGE: Back: 21.3" Chest: 32.3" Neck: 19.3" Sleeve: 8.1"