This case perfectly fits a box of two Calorie Mate bars. It allows you to carry them without the box getting damaged. This item was created using a 3D printer, so it has the characteristic layer lines of 3D printing. The material is PLA resin. You can take the bars out by pushing them from the round hole at the bottom. We have used a generous amount of material and created it without any internal cavities. Each print takes several hours, so please allow extra time for multiple purchases. Thank you for your understanding.