Wrapsack owners, who are encouraged to give their bag a name, can register the serial number on www.wrapsacks.com, along with details of where the bag is headed. Then they can return to the site to see where it has journeyed, a service called Track-a-Sack. [Michael Miner] says about 18,000 of the 100,000 purchasers of the Wrapsack have participated.
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