Base: 24 x 13 cm Height: 16 cm Fluorescent yellow? Yellow-green? I think the fourth photo is the closest to the actual color. My daughter borrowed it and got the part in the third photo dirty, even though I never used it (*_*). It was used only once. Please only purchase if you don't mind a used item. The inside is lined with vinyl, so it's also good for keeping things cold or warm.