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A shopper declared, "The best I have found. I have had this ball for 2.5 years now and use it regularly. It stays fully inflated (easily weeks between needing to add any air), is durable, and has the ...

WASHINGTON — At work, Pam O’Donnell types at her computer, talks on the phone and, every so often, bounces a bit on a big blue ball. O’Donnell has an office chair, but this doesn’t mean she uses it.