Twin Size Organic Mattress, Nisien 10 Inch Gel Memory Foam Hybrid Mattress in a Box, Fiberglass Free, Medium Firm Euro Top Bed Mattress for Cooler Sleep,100-Night Free Trial is up for auction in Home & Kitchen. The current bid is $116.00, 47% below the $219.99 MSRP, in New/Like New condition. This auction has ended — similar items appear in live auctions regularly.