I need to build a web site to sell t-shirts

General information for the website: We sell t-shirts, same label, 4 different sizes
Kind of development: New website from scratch
Description of every page/module: I am looking for a very simple web site that will allow for the company name, 2 short paragraphs of text, a picture of the available t-shirt, and the ability to order the t-shirt in S, M, L or XL.
Description of requirements/features: I prefer squarespace, as this is a relatively intuitive platform and I will be able to update the page after set up. It is only 1 style of t-shirt available, in four different sizes. I prefer you set everything up for me and then allow me to take over independently once the site is up and running. The purpose of the t-shirt is to raise money and awareness for queer-aligned youth groups.
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