All our felt transition balls are USTA approved.
"The Quick Start Tennis balls OnCourt OffCourt offers packaged in buckets are tremendous. We ordered 10 of the large buckets each of the red balls (for 36-foot courts), orange balls (for 60-foot courts) and green balls (for 78-foot courts). The buckets come in handy for both targets and storage."
CEO, Austin Tennis Academy
All prices are in USD.