my hero suit making the chest out of foam and latex (citizencosplay)

UPDATE What type of foam is it It is upholstery foam from The blue foam is 10mm thick High (firm). The white foam is 25mm thick Average (soft). What type of latex I used this which is pretty standard stuff. Why is it clued and not stitched When I stitched the muscles in to a suit the cotton would pop and nylon would tear th