This site has limited support for your browser. We recommend switching to Edge, Chrome, Safari, or Firefox.

Start Earning Rewards Join the C-IN2 Circle

Free Shipping US orders over $99

Easy Returns Go to Returns Center
Subtotal Free
View cart
Shipping, taxes, and discount codes are calculated at checkout

Cart 0

No more products available for purchase

Products

International orders are final sale. For orders that are shipping to destinations outside of the United States (including Canada), you may have to pay duties and taxes to your country's government.

Pair with

Your Cart is Empty

Perfect Pima Relaxed Crew Neck T-Shirt White - C - IN2 New York

Perfect Pima Relaxed Crew Neck T-Shirt White

Color: WHITE

$13.00 USD $36.00 USD
Layers Classic Ribbed Fitted Tank White - C - IN2 New York

Layers Classic Ribbed Fitted Tank White

Color: WHITE

$15.00 USD $32.00 USD
Hand Me Down Crew Neck T-Shirt Smoke Heather

Hand Me Down Crew Neck T-Shirt Smoke Heather

Color: SMOKE HEATHER

$27.00 USD $45.00 USD
High Twist Summer Crew Neck T-Shirt Black - C - IN2 New York

High Twist Summer Crew Neck T-Shirt Black

Color: BLACK

$12.00 USD $40.00 USD
Layers Slim Crew Neck T-Shirt Black

Layers Slim Crew Neck T-Shirt Black

Color: BLACK

$24.00 USD $40.00 USD
Layers Slim Crew Neck T-Shirt White

Layers Slim Crew Neck T-Shirt White

Color: WHITE

$24.00 USD $40.00 USD

Shop Men’s Briefs, Boxers, Tanks, and More by C-IN2

Flex Collection

Made to move with you. C-IN2 Flex delivers 4-way stretch, sculpted fits, and breathable performance that feels as good as it looks. Designed for everyday versatility, Flex blends comfort with an edge—whether you’re working out, lounging, or layering under your favorite fits.

Filters

Engineered for movement. Built to last.

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.

Ergonomic Contour Pouch

  • Sculpted Lift – Natural shape and definition
  • Locked-In Support – No shifting, no sagging
  • Flexible Fit – Moves with you, always
  • All-Day Comfort – For work, workouts, or rest
SHOP Hand Me Down

Innovative Fabric Blends

  • Designed for movement, made to be seen
  • Performance-grade functionality
  • Precision blends that hold shape and color
  • Comfort that doesn’t compromise on style
SHOP FLEX

Everyday Durability

  • Keeps its shape, wash after wash
  • No sag, no bag, no fade
  • Consistent support that doesn’t quit
  • Quality construction made to outlast trends
shop core

Everyday Essentials

Comfort meets quality. These are your daily go-to’s—built to move, breathe, and feel amazing under anything.

Sexy Styles

Minimal coverage, max impact. These are the cuts turning heads—from bold jocks to sleek thongs.

Discover Your Style

Fit, function, and personality. From our best-sellers to boldest cuts, here’s where to start.

Premium Basics, Engineered for Every Body

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.