Our Bark’n Boots™ Grip Trex™ feature two major advancements in dog boots—an upper inspired by human shoes and a high performance Vibram® sole.Built on an anatomical mold, just like human shoes, the boot’s upper maintains a consistent size, shape, and fit. The revolutionary upper design and construction ensures the boots are easy to put on, easy to secure, provide continued comfort, and most importantly, the boots stay on paws—from the first mile to the last. For the revolutionary sole, Ruff Wear partnered with Vibram® the world’s leading developer of soles for active pursuits. The partnership produced the unique Grip Trex™ design with omnidirectional treads and traction zones customized to the demanding needs of active dogs. The sole generates unequaled grip, traction, durability, and performance. Together, these two advancements produce a completely revolutionary dog boot from top to bottom. Put our Bark’n Boots™ Grip Trex™ on your dog and unleash the canine athlete inside, then do your best to keep up with your four-legged friend and enjoy the fun. Features: • Why dogs want our boots: • Stay on • Easy fit • Comfortable • Durable • Protect paws • Amazing traction • Built on an anatomical mold like human shoes for consistent fit, sizing, and shape • Air mesh upper is comfortable, breathable, durable, and drainable for all-season wear • Grip cuff hugs the leg, stays in place, and improves comfort • Expansion gusset makes the boots easy to put on and enhances fit • Sure Cinch closure strap and lash tab ensure that the boots stay on the paws • Seamless construction reduces abrasion and improves fit • Reflective trim adds safety and nighttime visibility • Vibram® high-grip, high-traction, high-performance sole • Omnidirectional X lug for stability and traction • Nonmarking sole for nautical and home interior uses • Extradurable for miles and miles of adventure Sizing: Sizing Instructions Bark’n Boots are built to secure around the ankle but below the carpal pad. The boot should have room in the paw area, allowing the paw to spread when bearing weight. Measuring Paw Width 1. Have your dog stand on a firm surface (wood, linoleum, or concrete). 2. Place a piece of blank paper under a front paw. 3. Lift the dog’s other front paw so that its weight is placed firmly on the paw being measured. 4. Mark the paper at the paw’s widest point on the left and right edges of the paw (see graphic). 5. Use a ruler to measure the width of the paw (in inches) from the left mark to the right mark. 6. Use the chart to determine the proper size. For example: if the width is measured between 2.25" and 2.5", the dog would wear a small boot; between 2.75" and 3.0", a large. SIZE PAW WIDTH† XXS 2.0" 5.1 cm XS 2.25� 5.7 cm S 2.5" 6.4 cm M 2.75" 7.0 cm L 3.0" 7.6 cm XL 3.25" 8.3 cm XXL 3.75" 9.5 cm †Paw width = measurement across widest part of paw when bearing weight Colors: red, blue | $59.95 (set of 4 boots)