These Bench t-shirts are a very popular brand and good quality that are perfect for you to create your own design on.   Each of these are a blank canvas that you can add heat transfer vinyl, (htv) or easysubli that you can sublimate on and then heat press to them.  They are 100% cotton.  
Please verify the size that you need with the measurements below as all sales are final.
Size is L: (12-14) in both black and white.  From the manufactures website, a ladies large has these measurements:
Body length from shoulder to bottom hem:  L: 26.5 in. (67.3 cm)
Chest:  L: 39-41 in. (99-104 cm)