If you don't know what size you need we have a very simple size chart that makes it simple to select the right size just follow the 4 simple steps
Step 1
Look at the picture attached this shows how we got our measurements from the tops
Step 2
Using the same technique measure top you have already at home
Step 3
Once you now have your own measurement look up our size chart
Step 4
Match your sizes to our size chart and select you size
| 
 Size  | 
 Waist Inside leg Outside leg  | 
| 
 Age 2/3  | 
 20 inch waist 17 inch 25 inches  | 
| 
 Age 4/5  | 
 22 inch waist 22 inch 31 inches  | 
| 
 age 6/7  | 
 22/24 inch waist 25 inch 32.5 inch  | 
| 
 age 9/10  | 
 24/26 inch waist 25.5 inch 33 inch  | 
| 
 Age 10/11  | 
 26/27 inch waist 26 inch 34 inch  | 
| 
 Age 12/13  | 
 28/29 inch waist 28 inch 36 inch  | 
| 
 xsmall  | 
 29/30 inch waist 28 inch 37 inch  | 
| 
 small  | 
 30/31 inch waist 28 inch 38 inch  | 
| 
 Medium  | 
 32 inch waist 30 inch 39 inch  | 
| 
 Large  | 
 34 inch waist 31 inch 40 inch  | 
| 
 xlarge  | 
 36 inch waist 31 inch 40 inch  | 
| 
 2xlarge  | 
 38 inch waist 32 inch 41 inch  | 
| 
 3xlarge  | 
 40 inch waist 32 inch 41 inch  | 
| 
 4xlarge  | 
 42 inch waist 33 inch 42 inch  |