Nothing stays the same

One of my biggest challenges in starting this T-shirt business has been to find (surprise!) a really good Tee. One that I would want to wear and I believed would appeal to most other women. Problem is that I work with a on-demand fulfillment company, who provides, prints and ships the T-shirts. My choices must be made from their product catalog. And evidently what I want (a medium weight, 3/4 sleeve, V-neck, available in sizes up to 5X) is too much to ask. I have searched several companies product catalogs. The search continues.