The Men's Heathered Gray Stevens Institute of Technology Ducks The Keeper T-Shirt is a must-have for loyal Stevens Institute of Technology Ducks fans. Made from a comfy cotton and polyester blend, this tee boasts printed graphics that proudly showcase your Ducks support. The crew neck and tear-away tag ensure a comfy fit, making it ideal for game day or any day you want to rep your Ducks pride.