Performance footwear and apparel brand while on earth™ today debuts The CMC, its most explosive trainer yet, created in collaboration with co-founder and San Francisco 49ers running back Christian McCaffrey. Designed for athletes who move with intention and finish with force, The CMC brings McCaffrey’s experience training to be one of the NFL’s best into a versatile performance shoe built for explosive training and dynamic workouts.
McCaffrey, who joined while on earth as a co-founder and investor in August 2025 after a longtime partnership with Nike, brings decades of experience on the field to the design details of the new trainer. The launch of The CMC, a comfortable and supportive trainer, marks a significant next chapter in McCaffrey’s partnership with while on earth™.
Features of the shoe include:
External heel counter: locked-in heel counter for your most explosive moves
Angled heel tab: designed to ease pressure on your Achilles
Mid-foot plate: supportive TPU mid-foot plate minimizes torsion during lateral movement and explosive workouts
Fully integrated lining: plush foam sockliner cushions every step from the first wear
Durable and breathable: nylon upper construction built for heavy reps and long days
Rubberized toe cap: reinforced toe and forefoot for extra protection and durability
Anatomical last: for a natural fit that is comfortable and secure
Ground-contact: multi-directional rubber outsole for grip and traction across multiple surfaces and movements
10mm heel-to-toe drop
“From the early days of joining while on earth™, I knew I wanted to create a shoe that could keep up with how I train,” said Christian McCaffrey, while on earth™ Co-Founder and Investor. “The CMC offers the stability and control I need to train explosively, without sacrificing comfort and versatility beyond the gym. Years of training can take a toll on the body, and my footwear needs to be durable enough to handle everything I put it through. I have personally tested this shoe for countless hours over the past year and I have total confidence in our final product.”
“We put a lot of thought into every detail,” said Todd Meleney, co-founder and CEO of while on earth™. “The CMC had a clear design brief from the first meeting Christian and I had together: create the most stable and supportive training shoe on the market without sacrificing comfort and versatility. We nailed it with this product and we can’t wait for athletes to put it to the test.”
Available for both men and women, The CMC represents while on earth™’s continued evolution as a performance brand creating versatile footwear and apparel for those who move, go and do.
while on earth™ is a Providence-based performance footwear and apparel brand creating high-performing, versatile essentials for modern athletes. Built by a proven team of brand leaders, athletes, and creatives, while on earth™ delivers timeless design rooted in discipline, intention, and movement. For more information visit whileonearth.co.
We break down how fitness, wellness, and healthcare are converging — and what it means for business, culture, and capital.
No thanks.
A smarter way to track the future of health.
Built for founders, executives, investors, and senior operators.
Subscribe to Fitt Insider
{"head":"<script>(function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':\r\nnew Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],\r\nj=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src=\r\n'https:\/\/www.googletagmanager.com\/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);\r\n})(window,document,'script','dataLayer','GTM-KV7LDXC');<\/script>\r\n<!-- End Google Tag Manager -->\r\n<script>(function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':\r\nnew Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],\r\nj=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src=\r\n'https:\/\/www.googletagmanager.com\/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);\r\n})(window,document,'script','dataLayer','GTM-T7J5HFB');<\/script>\r\n<!-- Meta Pixel Code -->\r\n<script>\r\n!function(f,b,e,v,n,t,s)\r\n{if(f.fbq)return;n=f.fbq=function(){n.callMethod?\r\nn.callMethod.apply(n,arguments):n.queue.push(arguments)};\r\nif(!f._fbq)f._fbq=n;n.push=n;n.loaded=!0;n.version='2.0';\r\nn.queue=[];t=b.createElement(e);t.async=!0;\r\nt.src=v;s=b.getElementsByTagName(e)[0];\r\ns.parentNode.insertBefore(t,s)}(window, document,'script',\r\n'https:\/\/connect.facebook.net\/en_US\/fbevents.js');\r\nfbq('init', '605118897773201');\r\nfbq('track', 'PageView');\r\n<\/script>\r\n<noscript><img height=\"1\" width=\"1\" style=\"display:none\"\r\nsrc=\"https:\/\/www.facebook.com\/tr?id=605118897773201&ev=PageView&noscript=1\"\r\n\/><\/noscript>\r\n<!-- End Meta Pixel Code -->","body":"<!-- Google Tag Manager (noscript) -->\r\n<noscript><iframe src=\"https:\/\/www.googletagmanager.com\/ns.html?id=GTM-KV7LDXC\"\r\nheight=\"0\" width=\"0\" style=\"display:none;visibility:hidden\"><\/iframe><\/noscript>\r\n<!-- End Google Tag Manager (noscript) -->\r\n\r\n<!-- Google Tag Manager (noscript) -->\r\n<noscript><iframe src=\"https:\/\/www.googletagmanager.com\/ns.html?id=GTM-T7J5HFB\"\r\nheight=\"0\" width=\"0\" style=\"display:none;visibility:hidden\"><\/iframe><\/noscript>\r\n<!-- End Google Tag Manager (noscript) -->","footer":"<script type=\"text\/javascript\" id=\"linkedin-script\">\r\n_linkedin_partner_id = \"4087129\";\r\nwindow._linkedin_data_partner_ids = window._linkedin_data_partner_ids || [];\r\nwindow._linkedin_data_partner_ids.push(_linkedin_partner_id);\r\n<\/script><script type=\"text\/javascript\">\r\n(function(l) {\r\nif (!l){window.lintrk = function(a,b){window.lintrk.q.push([a,b])};\r\nwindow.lintrk.q=[]}\r\nvar s = document.getElementsByTagName(\"script\")[0];\r\nvar b = document.createElement(\"script\");\r\nb.type = \"text\/javascript\";b.async = true;\r\nb.src = \"https:\/\/snap.licdn.com\/li.lms-analytics\/insight.min.js\";\r\ns.parentNode.insertBefore(b, s);})(window.lintrk);\r\n<\/script>\r\n<noscript>\r\n<img height=\"1\" width=\"1\" style=\"display:none;\" alt=\"\" src=\"https:\/\/px.ads.linkedin.com\/collect\/?pid=4087129&fmt=gif\" \/>\r\n<\/noscript>\r\n\r\n<script async data-id=\"101397610\" src=\"\/\/static.getclicky.com\/js\"><\/script>"}
We use cookies
We use necessary cookies to make this site work. With your consent, we also use analytics and advertising technologies to improve the site and measure marketing.
