<b>Multi-purpose:</b><br><br>1.These boots can keep the dog's paws warm and dry in cold winter.<br><br>2.It can protect the dog's paws from being burnt in hot summer.<br><br>3.It can prevent dogs from scratching carpets or wooden floors<br><br>4.It can protect the dog's paws against hurt from stones, asphalt, grass etc. while walking.<br><br>5.It can keep the dog's paws clean and dry on rainy days.<br><br><b>Measure method:</b><br><br>1) Place the pet's paws on a piece of paper and press down on the top, mimicking how the paw spreads when the dog is walking.<br><br>2) Measure the paw length and width,mark the left and right sides on the paper and measure the distance between the marks.<br><br>3) Choose size according to width is better.<br><br>4) Choose the Right size for your dogs.<br><br><b>Size Referance:</b><br><br>Size 1:（2.3''x1.6'')(L*W) for dogs around 15lb<br><br>Size 2:（2.4''x1.7'')(L*W) for Schnauzer;Bichon Frise etc.(19.8lb)<br><br>Size 3:（2.5''x1.9'')(L*W) for Standard Poodle;Schnauzer etc.(Over 23lb)<br><br>Size 4:（2.51''x2.24'')(L*W) for Akita;American Cooker Spaniel etc.(About 33lb dog breed)<br><br>Size 5:（2.51''x2.36'')(L*W) for Border Collie;Cooke;Medium Chow Chow etc.(43lb mixed border collie;55lb American Pit Bull)<br><br>Size 6:（2.83''x2.59'')(L*W) for Medium Samoyed;Husky;Labrador;Medium and large Chow Chow etc.(65lb;70lb pitbull)<br><br>Size 7:（3.22''x2.91'')(L*W) for Medium Golden Retriever;Large Samoyed;Labrador etc.(75 lb GSP;90 lb German Shepherd)<br><br>Size 8:（3.22''x2.99'')(L*W) for Large Golden Retriever;German Shepherd,Rottweiler;Old English Sheepdog;Alaska Malamute etc.(80lb labradoodle;90 lb Lab)<br><br><b>Warm tips</b><br>*Don't worry when your dogs start to walk with new shoes.You can try to encourage and guide your love dog to adapt to this new friend - shoes.<br><br>*Though the dog boots are waterproof, it can not be applied in deep water or in sands, because there may be water or fine sand seepage through sewing needle holes.