For member discounts, make sure you use the email address you have registered with SixFour3. For Travel, use "Travel10" and D1, use "D120". These discounts will NOT validate without an active SixFour3 membership account. Member discounts cannot be combined with already discounted products.
Any tee, any size, just click the QR code and proceed to purchase. Make sure you choose "Pick Up" from the delivery method (to avoid paying a shipping fee), then just grab your shirt and go (please choose first from the shirts in the baskets, not on the hangers, unless that is the only size available for you).