The product is a signed hardcover copy of "50/50: Secrets I Learned Running 50 Marathons in 50 Days--And How You Too Can Achieve Super Endurance!" by Dean Karnazes. Published in 2008 by Grand Central Publishing, this book offers insights into achieving super endurance through running, with a focus on health and fitness. The book includes illustrations and spans 304 pages, making it a valuable resource for those interested in running and jogging. This particular copy is signed by the author, adding a unique and personal touch to the item.
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