Fits vintage 1960's-70's Persons 18" Banana seats. Most of the seats I have recovered have only one layer of foam thats where the larger piece comes in occasionally I come across a seat with an extra layer so I have included the smaller piece if extra padding is required. I would definitely use it if the bike is going to be a rider. This foam is 1/2" thick just like original. If using both pieces, use spray glue or brush on contact cement to glue the small piece of foam To the top of the top seat pan, make sure it is cleaned and preped so the adhesive can work. The larger piece of foam goes over the smaller layer and wraps under the lip and is trimmed to fit. This adds a layer of protection to keep the sharp edge of the pan from cutting your vinyl seat cover. Note: It is OK to use a hot glue gun to hold the material to the underside of the seat pan but I DONOT recommend using it to hold the foam to the top of the pan it dries very hard and you will feel it under the cover.
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