?arrowbash arrowbash 4 pack inflatable stadium seat cushion 16.5 x 16.5 x 5.9 inches waterproof inflating booster stadium seats hot tub booster cushion portable bleacher chair for airplane sports camping is up for auction in Sports & Outdoors. The current bid is $1.50, 94% below the $24.17 MSRP, in As Is condition. This auction has ended — similar items appear in live auctions regularly.