It has curved front, but straight-edged sides. When finished, the basket-box measures 4 2/8 by 2 7/8 inches at the bottom & 6 1/2 by 3 3/4 at the top. To make it sturdy, I've glued patterned paper to cardstock (details on how to do that below.) You could just use heavy cardstock if you like. :O)