THE SCIENCE TeeCHER :: Shirts by Size

25% off storewide closeout sale!

This is a going-out-of-business sale. This was started as a family business, and since my divorce several years ago, my heart hasn't been in it. So I'm moving on.

Everything is 25% off, while it lasts!

Several designs are completely sold out and no longer available, and most shirts have sold out in one or more sizes.

Click here to see shirts listed by sizes that are still available.

Click here for for Women's shirts sorted by available sizes.

Click here for for Youth shirts sorted by available sizes.

Orders over $200 get a 15 percent discount and free USA shipping; orders over $400 get a 20 percent discount and free USA shipping.

Shirts by Size


Adult Small
22 products

Adult Medium
17 products

Adult Large
18 products

Adult XL
17 products

Adult 2XL
20 products

Adult 3XL
8 products

Adult 4XL
14 products

Adult 5XL
3 products