Noun
spongy rubber; made by introducing air bubbles before vulcanization and used for cushioning or upholstery
Source: WordNetfoam-rubber
I started playing the guitar when we started filming the pilot to 'Lost in Space,' which was way back in December of 1964, and there's a little bit in the pilot that was used in the first season where Will Robinson is sitting around some bad foam rubber rock playing and singing 'Greensleeves.' Bill Mumy
Alternatively a 6 to 8 inch wedge-shaped foam rubber pad could be used to elevate the upper body. Source: Internet
The poop deck was built on a hinge which could rise from zero to ninety degrees in a few seconds as the ship's stern rose during the sinking. citation For the safety of the stuntmen, many props were made of foam rubber. Source: Internet
Pads that can trigger a MIDI device can be homemade from a piezoelectric sensor and a practice pad or other piece of foam rubber. Source: Internet
Sideline barriers are convert high and made of high density foam rubber. Source: Internet
Substitute with foam rubber which is soft and flexible. Source: Internet