Yes, Wal-Mart in Factoria has foam and batting materials sold in roll.
Zlatina, you might have better luck at a JoAnn store. They have a variety of foam and polyfill for cushions and pillows. Good luck!
The Wal-Mart I visited was in the Factoria district of Bellevue. The only thing I was looking for was a phone case and screen protector for my new phone. Sorry.
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