Ice Bricks – The Ice bricks are plastic capsules which are usually the size of a brick and these are useful in situations where they can be reused over and over again and also reduces the possibility of a puncture whilst its being transported . The Bricks are also fixed by shape therefore easy to stack in a freezer without having the problem of the gelpacks where they are not always the same shape when frozen. The Ice bricks are also specifically used in Cold chain applications when there are some Phase change chemicals that are used but that may cause slight irritation if it comes in contact with skin . The Ice bricks are commonly used in cold Chain Shippers or validated Temperature shippers.