Size

Age

Weight

Small / Medium

3–6 months

13–22 lbs. / 6–10 kg

Large

6–15 months

20–26 lbs. / 9–12 kg

Extra Large

1–2 years

24–31 lbs. / 11–14 kg

Super Large / Junior

2–4 years

31–44 lbs. / 14-20 kg