Tennis Balls Discussions

Why Can't I Use High Altitude Tennis Balls (designed For Play At 3500+ Ft) Where I Am, Roughly 100 Ft Altitude?
Midwestsports.com/ wilson-us-open-tennis-balls/ p/ 5151012/ i have kept them in the container for now. hesitant to use them here - probably wait until next time i am at 3500+, just wanna know what 'd happen if i were to use them near sea level. hopefully someone has experienced this dilemna? (Read answers)