?lewtemi Lewtemi 4 Pcs Flexible Seating Yoga Ball Chair for Classroom 16.8 Inch Inflatable Donut Ball Chair with Inflator for Kids Student Sensory Balance Autistic Children and Office Exercise is up for auction in Sports & Outdoors. The current bid is $29.00, 27% below the $39.99 MSRP, in Good Condition. This auction has ended — similar items appear in live auctions regularly.