up to 7lb

(up to 3.1kg)

6 - 10lb

(2.7 - 4.5kg)

10 - 15lb

(4.5 - 7kg)

15 - 20lb

(7 - 9kg)

20 - 25lb

(9 - 11kg)

25 - 28lb

(11 - 13kg)

28 - 32lb

(13 - 14.5kg)

32 - 35lb

(14.5 - 16kg)

35 - 40lb

(15.9 - 18.1kg)

39 - 42lb

(17.7 - 19.1kg)

up to 20in

(up to 50.8cm)

19 - 23in

(48 - 58cm)

23 - 25in

(58 - 63.5cm)

25 - 28in

(63.5 - 71cm)

28 - 31in

(71 - 78.5cm)

31 - 33in

(78.5 - 84cm)

33 - 36in

(84 - 91cm)

36 - 39in

(91 - 99cm)

40 - 44in

(101.5 - 112cm)

45 - 46in

(114 - 117cm)

3.5 - 4.25in

(8.9 - 10.8cm)

4.25 - 5.25in

(10.8 - 13.3cm)

5.25 - 6.5in

(13.3 - 16.5cm)

6.5 - 8in

(16.5 - 20.3cm)

15.5 - 16.5in

(39 - 42cm)

16.5 - 17.5in

(42 - 44.5cm)

17.5 - 19in

(44.5 - 48cm)

19 - 20in

(48 - 51cm)

20 - 21in

(51 - 53.3cm)