When spongy material is sewn,it will not transform;instead,it shall be sewn very smoothly and neatly.
The spongy material found under your foot in many running shoes. A shock-absorbing material that's lighter than polyurethane(see PU).
She ran her hand up its surface, expecting the ice to stop her. Instead, her hand encountered spongy material like packed snow.
Any of various light, porous, semirigid or spongy materials used for thermal insulation or shock absorption, as in packaging.
