Shop Men’s Briefs, Boxers, Tanks, and More by C-IN2
New Core
The everyday essential, reimagined. The C-IN2 Core Collection is crafted from 100% premium cotton for natural softness, breathability, and all-day comfort. Designed to fit and flatter, Core features the essential cuts—low rise briefs, mid rise briefs, trunks, runner boxers, and boxer briefs—all finished with C-IN2’s bold waistband.
Now available in bold new shades like Turmeric Orange and Lagoon Blue, Core takes your basics beyond basic. Whether you’re stocking up on classics or adding a pop of color, this is underwear you’ll reach for day after day.
For nearly two decades, C-IN2 has redefined men’s underwear with premium materials, sculpted fits, and bold design. With over 100,000 customers and counting, our products deliver confidence from the inside out.
C-IN2 is a New York–born men’s underwear and apparel brand with one mission: to make every man look good and feel confident. We design premium basics and fashion-forward styles with innovative fabrics, engineered fits, and durable construction that lasts. Working closely with our partners, we create unique materials and refine every detail—from the cut of a t-shirt to the fit of a brief—to deliver comfort and style you can feel every day. Inclusive, empowering, and unapologetically bold—C-IN2 is made for every body.