First you need to get yourself a 3 seater swing. The 3 seater swing you buy must have a 3 Seater Cast Aluminum. This swing frame you purchase must be a true heavy duty garden swing with heavy duty powder coat finish. Make sure that it also has a tilting sunshade and heavy duty sling set and sunshade so it will not fade in the most harsh outdoor climate. This is the your first step and skeleton of your 3 futon seater swing.
Now that you have your 3 seater swing frame. It still isn't the most comfortable thing in the world. Good can be better. So we look at combining another luxury into our set. The hard part is to find a futon that you can use for cushioning in your brand new 3 seater swing frame. Now don't be discouraged. After all, it's just a futon you are looking for to fit the puzzle right? Wrong. There is no place on earth you can find a futon which can fit the size of a 3 seater swing. It just isn't available.
However, there is alternative. You can find a cushion made with the texture and quality of a futon mattress and then use it as your cushioning for your 3 futon seater swing. Now just head down to a futon store and look for a baby futon. You need to tell the sales person your intention so he or she can have an idea of your 3 futon seater swing project and estimate the best cushion made of futon specifications for your 3 futon seater swing. Ask to see the choices of baby futons. Futons made for babies are of same texture and are not softer or harder than ordinary futons. So all you need is six of them and then you will have your complete fusion of traditional Japanese bedding and 3 seater outdoor garden swing. Your new 3 futon seater swing will be the envy of your neighbors for a very long time!