S is suitable for most guinea pigs and young rabbits of 0.5KG M is suitable for most young rabbits and adult rabbits of 1-2KG and L is suitable for rabbits of 2.5KG. Material:Polyester Size---neck circumference---chest circumference---clothing length---towing rope length A B: S---6.69-9.84 ---9.84-13.39 ---5.51 ---49.21 M----7.48-9.84 ---9.84-14.57 ----7.09 ---49.21 L---8.27-13.39 ---11.42-16.54 ---7.87 ---49.21 C D: S----7.09-11.02 ---9.84-12.2 ---5.91 ---49.21 M---7.48-11.81 ---11.02-16.54 ---7.87 ---49.21 L---8.66-12.6 ---11.81-16.93 ---9.06 ---49.21 Package Include: 1 x Pet Clothes 1 x Pet Traction Rope Notes: 1. Please allow 1-3 cm difference due to manual measurement and 3-5 g for the difference between different colors. 2. Due to the screen difference the color may be a little different from what you expect please allow it. 3. 1.00cm=0.39