Exclusive: NFL All-Pro Christian McCaffrey's Signature Shoe

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In the 1950s, the U.S. Navy recalibrated waffle-knit cotton into the ultimate baselayer. Like so many standard-issue pieces from that era, the waffle-knit thermal has grown into a staple of the modern wardrobe. Relwen paid close attention to that military heritage when developing the Bi-Waffle Thermal Crew. Knit from 100% cotton, it’s soft and breathable when worn solo and boasts an impressive warmth-to-weight ratio once you start adding layers. And like everything else founder Jamie Rupp makes, it’s a sharp addition to your rotation that never forgets its utilitarian roots.

While on Earth was founded to help athletes make the most of every moment. First with their all-purpose Move Trainer, and now with the all-new CMC Trainer—the brand’s first signature shoe with co-founder and San Francisco 49ers all-pro running back Christian McCaffrey. Drawing on decades of high-intensity training experience and a full year of wear-testing by McCaffrey, the CMC Trainer is built for control, stability, and comfort across all types of high-strength and HIIT workouts. Featuring a durable and breathable nylon upper, a locked-in heel counter, and an angled heel tab designed to ease pressure on your Achilles, it's a shoe that moves with you—at the pace you set, whether through explosive on-field drills or grounded,
gym-based mobility training.

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