ello oasis 18oz stainless steel kids tumbler with handle & retracting straw, 100% leakproof, double-wall vacuum insulated, kids water bottle for school, bpa free, dishwasher safe, purple holographic 18 ounces shiny: purple is up for auction in Baby Products. The current bid is $5.50, 76% below the $22.99 MSRP, in New/Like New condition. This auction has ended — similar items appear in live auctions regularly.