The following size guide is typical for baby garments stocked by Sustainababy:
 

Size       Age                    Weight
0000      Newborn              up to 4kg / 8lb 8oz
000        0 - 3 months       4 - 6kg / 8lb 8oz – 13lb 3oz
00         3 - 6 months        6 – 8kg / 13lb 3oz – 17lb 6oz
0           6 - 12 months      8 – 10kg / 17lb 6oz – 22lb
1           12 – 18 months     10 – 12kg / 22lb – 24lb 2oz
2           18 – 24 months     12 – 14kg / 24lb 2oz – 30lb 8oz
 

Organic products (eg. clothing, body products) have been produced without the use of chemicals such as pesticides and herbicides. The manufacturing process of such products is therefore less harmful to our environment and is more kind to babies skin.