3.75" wide, just shy of 6" long, 1.5" thick.
There is unnecessary thickness to this product and I have occasionally considered depotting everything, especially since the liners require a brush and there's nowhere to put one. But it is also prettily constructed and feels like the delicate pigments inside are well protected, so... And if I was traveling with it I'd have to bring other products and brushes anyhow, so... But the bulk doesn't make it feel luxurious, just weird.
The top six shadows are 1" wide by 5/6" (10/12") tall. The liner circles are 9/12" in diameter. The blushes are 1 3/12" wide by 1 1/3" tall. I am returning this today because of my allergic reactions to the eyeshadow. So this pic is so you can see the whole case before I return it.