SizeFor the best fit match the below dimensions to your pets measurements as closely as possible.If your pet falls somewhere between two sizes we advise ordering the larger of the two.Paw Width: Using our Pawprint-able Sizing Guide place your pets paw on the diagram and mark the widest points at the left and right side of the paw.This area is usually near the base of the toes.Paw Length: With you pets paw still in position mark the longest points at the front and back of the paw;remember your pets nails will need to fit too.Label 1: Length: 1.1 in (3cm) Width: 0.7 in (2cm) Recommand Weight: 1.1-2.2 lbs (0.5-1kg)Label 2: Length: 1.3 in (3.5cm) Width: 0.9 in (2.5cm) Recommand Weight: 2.2-5.5 lbs (1-2.5kg)Label 3: Length: 1.5 in (4cm) Width: 1.1 in (3cm) Recommand Weight: 5.5-7.7 lbs (2.5-3.5kg)Label 4: Length: 1.7 in (4.5cm) Width: 1.2 in (3.3cm) Recommand Weight: 7.7-11 lbs (3.5-5kg)Label 5: Length: 1.9 in (5cm) Width: 1.3 in (3.5cm) Recommand Weight: 11-14 lbs (5-6.5kg)