There was a batch done that did not have 4 inches of velcro to adjust, instead it just has 2 inches to adjust. This variation on the Headache Hat allows for the versatility of switching out the ice. The band can be loaded with the included ice mats that are 2 rows of 10 cubes each. Simply freeze the ice mats and then load into the wrap. The fit is slightly different than the Headache Hat because the cubes are connected and there are two rows so more targeted on the temples and forehead - Comes with 2 ice mats. Only 20 available.