This is a Firefox t-shirt from the 2000s. I think it's a corporate t-shirt that will increase in value, like Apple or Intel. The monochrome logo with a back print is rare. There is damage on the right sleeve. These are also increasing in price. It's XXL, but it has a wide XL feel, with a nice boxy silhouette. Color: Black Size Marked: XXL Actual Size (cm) Shoulder Width: 60 Body Width: 64 Length: 70 Sleeve Length: 24