Donde esta hecho el producto?

Yo le quite las etiquetas 🏷 y no recuerdo de donde son. Pero son de muy buen material suaves y frescas.

on this page the item is listed as "cotton stretch", but after you add it to the cart, they are listed as "cotton classic". Please clarify?

The T-shirts are well-made. They stretch and are comfortable.

My wife is an XS - fact is - not all clothing items are available in XS. And, when that size is offered, there are often fewer garments available in sizes that are not popular with the public.

How come when I add to cart a different color shows in the cart? I want the black and Heather grey shows in the cart before checkout?

It’s possible that you selected a color that’s out of stock but not indicated at the order site. I would cancel the order and go back to the same product to re-order and see if that works. If the color is changed again at checkout you can try contacting the seller or ask Amazon for help.