Abstract: A mattress with customizable top layer includes a first cover, a core, at least one comfort layer, at least one second cover, a plurality of fastening mechanisms, and a casing. The plurality of fastening mechanisms includes a plurality of first interlocking fasteners and a plurality of second interlocking fasteners. The core is removably enclosed within the first cover. The plurality of first interlocking fasteners is perimetrically connected around a top surface of the first cover. The at least one comfort layer is removably enclosed within the at least one second cover. The plurality of second interlocking fasteners is perimetrically connected around a bottom surface of the at least one second cover. The first cover is attached to the at least one second cover through the plurality of first and second interlocking fasteners. The first cover and the at least one second cover are removably enclosed within the casing.