a group of children playing tennis. portrait of happy, cute, diverse tennis players standing together and smiling on the court - fitness ball 個影片檔及 b 捲影像00:12
female doing core exercises in the park. mixed race athlete doing ab exercises outdoors. woman using a slam ball for ab exercises - fitness ball 個影片檔及 b 捲影像00:07
portrait of female volleyball player holding a volleyball ball at sports court - fitness ball 個影片檔及 b 捲影像00:08
asian woman relaxing on yoga ball and eating sandwich and chatting online with team of colleagues on laptop while work from home at home at night. - fitness ball 個影片檔及 b 捲影像00:10