If you want to place an order of more than 20 pieces and your design is spot colour then screen printing is the option
Design your own hoodie >> Screen Printing
Depending on your design a printer would need to
make a decision which printing option to go down. The first two
questions are how many pieces is the order and what is the artwork.
Since in screen printing you have to make a screen for each colour
in the design it is really not viable for small orders since each
screen charge is £25. Having said that some designs can only be
printed in screen and that decision can only be made by the printing
master once he has seen the design.