... non-smell,non-toxic 4.eco-friendly. sound-adsorbing waves sponge very soft / flexible/eco-friendly/recycled foam1 .The base: ... the others 3. Fire prevention It is a health sponge,can prevent the fire.4.the wave height: Can ... sword toys. ball, tube, barSponge : fire proofing sponge ,wave sponge, sound absorbing cotton, coarse cleaning sponge etcOthers: Non_woven bags, kraft bubble envelope , insulating ...