Storage box made of strong plastic. Lid can be closed with 2 clips, protecting the contents against dust and dirt. Perfectly stackable with or without lid. Completely flat and reinforced bottom. Can be used as a pen tray. Outer ft: 22 x 10 x 4 cm (l x w x h) Inner ft: 18.5 x 8 x 3 cm (l x w x h) Capacity: 0.55 liter