NIKE Authentic Nike x Billie Eillish Mushroom Short Sleeve T-Shirt (M) No flaws except the original tag was cut out. The other fabric tag is inside though. Nike and Billie Eilish have teamed up to release their new Nike x Billie Eilish Tee Mushroom t-shirt which comes with many features. It has a mushroom color. On the front side, you will find a black Nike logo and a Billie Eilish graphic print at the bottom back side. It's short-sleeved and made from heavy cotton fabric to retain warmth. This Nike x Billie Eilish Tee Mushroomis standard fit, comes at regular size recommended for machine wash. This Nike x Billie Eilish Tee Mushroom is available in the menswear collection and was released on April 24th 2022. It's at a retail price of $40.