This is a transparent thermoformed blister where the product is visible from all sides. It has two hinged compartments with a locking arrangement with a keyhole. Both sides printed insert can be trapped in between the two compartments which gives the pack very unique look and also gives complete protection to the product. A trifold clamshell can also be designed for the more attractive pack. Although the cost of a clamshell Blister is on the higher side and the development cost is also more than normal Blister Forming Tools.