The following sizes for reference:

Adult(inch)

S

M

L

XL

girth

55-59

58-62

61-65

65-69

chest

31-34

33-36

35-39

37-41

waist

25-28

26-29

28-31

30-33

hip

34-37

36-39

39-41

40-43

Child(inch)

6

8

10

12

14

16

girth

38-42

41-45

44-48

47-51

50-54

52-56

chest

21-24

22-25

23-26

25-28

27-30

29-32

waist

17-20

18-21

19-22

21-24

22-25

24-27

hip

23-26

24-27

26-29

28-31

30-33

32-35