MEASURE STEPS: 1. Place your pet on the floor plate or a piece of paper 2. Lift her/his opposite paw to let the weight on the paw that is being measured 3.Measure the width from the outer edge of the two outside 4.Measure the length of the paw beginning with the back of the large base pad to the end of his toe nails Dog Shoes got 5 sizes for your choice: XS/S/M/L/XL Size: XS (Size 1)---XS fits dogs weighing about 1.1 to 2.2 Pound . Sole Size: 4.3 x 3.4cm/1.7" x 1.3"(L*W); Fit Paw Size: 3.3 x 2.6cm/1.3" x 1"(L*W). Size: S (Size 1)---S fits dogs weighing about 3.3 to 4.4 Pound .Sole Size : 4.7 x 3.8cm/1.8" x 1.4"(L*W); Fit Paw Size : 3.7 x 2.8cm/1.4" x 1.1"(L*W) Size : M (Size, 3)---M fits dogs weighing about 4.4 to 7.7 Pound .Sole Size : 5 x 4.2cm/2" x 1.6" (L*W);Fit Paw Size : 4 x 3.2cm/1.5" x 1.2'' (L*W). Size : L (Size 4)---L fits dogs weighing about 7.7 to 9.9 Pound .Sole Size : 5.6 x 4.7cm/2.2" x 1.8"(L*W); Fit Paw Size : 4.6 x 3.7cm/1.8" x 1.4"(L*W). Size : XL(Size 5)---XL fits dogs weighing about 9.9 to 13.2 Pound . Sole Size : 62 x 50mm/ 2.4" x 2"; Height : 60mm/ 2.4". NOTE: Please allow 0.1 inches differs due to manual measurement. According to the second picture, measure your dogs right size and choose the suitable one. Dog socks should fit snugly, please choose a close size. If you are in between sizes choose the larger size. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-DIMEANI official store