Ottoman beds have become one of the most popular types of storage beds. With smaller room sizes, and space being at a premium, customers are looking more and more for better storage options. Consequently the range and types of ottoman beds has increased. We at The Bed Shop recommend, if you're looking for an ottoman bed bigger than a single, that you purchase one with four gas pistons. This is very important because it will help with the longevity of the product. In our experience those which only have two pistons can prove problematic in the long term. Remember that when you lift the base you are also lifting the weight of the mattress therefore it is crucial to have four pistons.