Big Max Trolley Travel Cover Handy and very easy to use – the trolley cover universal from BIG MAX for your trolley. You would like to carry your trolley, but don’t want to get dirty? The travel cover universal from BIG MAX protetcts your car and your locker against dirt and make it easy to carry. The trolley cover universal is made of water repellent, tearproof material with a string to close and carry the trolley, due to its size it can be used for each kind of trolley.