The Threadless company doesn’t accept sats but …

If you want to DM me your order and address, I will put it in my cart to find out the total cost (product + shipping), and let you know what it is.

If that price is okay, I will send you a LN invoice. After you pay, I will complete the order on the website and DM you the confirmation number.

Threadless will make the products and ship directly to you.

That’s the only way I can think of, since the products are made on demand by Threadless when the order is placed.