maelstrom 40l hiking backpack, lightweight camping daypack with rain cover | water-resistant rip-stop nylon, wet/dry separation, multi-pockets, survival whistle. ideal for men, women, travel, trekking 40l blue 40l daypack backpacks is up for auction in Sports & Outdoors. The current bid is $1.00, 97% below the $35.93 MSRP, in As Is condition. This auction has ended — similar items appear in live auctions regularly.