Heather Grey, 100% Organic cotton. Fair Trade, Fair Labour.
A note about Size:
In general go up a size- if the tee is 7-8yrs, 7 year olds will be fine, 8 year olds will have more room in a 9-11. Tall 10 year olds and 11 yrs are better in 12-14yrs.
Now available on adult sizes too, check here.