Baval Hard Case Compaitble with Boost GB40/Boost GB20/Boost X GBX45 UltraSafe 1000A/500A/1250A Jump Starter, The Baval hard protective case is specifically designed for Boost GB 40/GB 20/GBX 45 Jump Starter, allowing for perfect storage of boost gb 40 ultrasafe jump starter. The smooth zipper makes it very easy to open and close the case, making it convenient for storing and retrieving the jump starter gb40