Regatta have a range called “Honestly Made” which are made from 100% recycled materials.
From Sally McEnallay to Everyone 04:05 PM
Teemill is a really good place for organic fairtrade t shirts. Totally agree.
The clothing company I mentioned is:- https://nosweat.org.uk/t-shirts/
They will also link you up with appropriate printers for the size of the order.
(From Martin at 123 Lighting)