Size chart is available on our campaign page which can give you the guidance.
Also you can reference to the size of our model in video below.
Model's height: 176cm/5'8"
Model is wearing: Size Large
Extra length option is available if you are taller than 180cm, the sleeve and shirt body length will be 2.5cm longer than standard size.
Soon after Kickstarter campaign ends, you will receive an email or reward survey from us. You can select your size and shipping address details there.
It is possible to choose different sizes if your reward is more than 1 shirt.
Don't see the answer to your question? Ask the project creator directly.