Colorfulhouse Waterproof Pet Boots for Medium to Large Dogs Labrador Husky Shoes 4 Pcs (Red, 4 (2.5"x1.9")) Molded rubber bottom: non-slip and waterproof Elastic straps with reflective tape for safely walking at night Cute pet paw Embroidery The size is the size inside the boots, not boots size outside; Choose size according to width is better Size reference: size 4 for 30-42 lbs; size 5 for 40-55 lbs; size 6 for 52-65 lbs; size 7 for 63-75 lbs; size 8 for 74-88 lbs