Size Instructions: Please carefully measure the width of your dog's paw before purchasing. You can select the appropriate size for your dog to achieve the most comfortable fit，Size 1: Yorkshire Terrier (12-23 pounds)，Size 2: West Highland White Terrier (18-27 pounds)，Size 3: Jack Russell Terrier, Cocker Spaniel (23-33 pounds)，Size 4: Border Collie, Beagle (31-40 pounds)，Size 5: Australian Shepherd, Dalmatian (40-55 pounds)，Size 6: Labrador Retriever, Airedale Terrier (52-65 pounds)，Size 7: Golden Retriever, Setter (63-75 pounds)，Size 8: German Shepherd Dog, Bernese Mountain Dog, Rottweiler (74-88 pounds) Scientific Design: The shoes are scientifically designed to bend. According to the shape of the pet's foot, the sole is soft and easy to bend. The arch pivot point stays on the ground, maintaining balance during running and jumping, making your beloved pet more comfortable when wearing them. High-quality Materials: The shoes are made of Lycra water-resistant upper and a soft and warm polar fleece lining, which allows your dog's paws to stay warm and dry even in winter. Meanwhile, the waterproof fabric enables your dog to go out in rainy or snowy weather. Safe Adjustment: The dog shoes have a wide opening design, making them easy to put on and take off. The double Velcro straps are easy to adjust the tightness to prevent the shoes from falling off and ensure a snug fit. The outer Velcro strap has a reflective strip, and the reflective strip improves visibility throughout the night, also keeping your dog safe at night. New Friend Dog Paw Shoes : Don't worry when your dogs start to walk with new shoes but not in a normal pace even prance. You can try to encourage and guide your love dog to adapt to Jzxoiva dog boots! These scientifically designed dog shoes provide comfort and protection with a flexible, soft sole that adapts to your pet’s movements. Made from water-resistant Lycra and lined with warm polar fleece, they keep paws dry and cozy in any weather. The wide opening and double Velcro straps ensure a secure fit, while reflective strips enhance nighttime safety. Contact us for any size concerns—we’re here to help with 100% after-sales support!