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The new shape of men’s fashion

Core Runner Boxer Grey Heather - C - IN2 New York
Core Runner Boxer Grey Heather - C - IN2 New York
Core Runner Boxer Grey Heather - C - IN2 New York
Core Runner Boxer Grey Heather - C - IN2 New York
Core Runner Boxer Grey Heather - C - IN2 New York
4.8
Rated 4.8 out of 5 stars
256 Reviews

Core Runner Boxer Grey Heather

$27.00 USD Regular price $30.00 USD

Size Size chart

True to size. For loose fit, go one size up.

Fit

12345
SmallTrue to sizeLarge

Runner boxer with classic cotton comfort and a modern, athletic cut

The C-IN2 Core Runner Boxer takes inspiration from classic military runner shorts, reworked into a streamlined boxer silhouette built for ease and movement. Designed with a runner cut and signature side insets, it delivers a sleeker, more flattering fit that opens up the leg without feeling oversized.

Made from breathable 100% cotton, this boxer offers soft, natural comfort for all-day wear. A functional button fly adds everyday practicality, while the shorter 3" inseam keeps the profile light and mobile without excess bulk. Finished with an exposed logo waistband, it’s classic Core comfort—refined with athletic intent.


Fabric Type & Performance
100% cotton fabric designed for breathable comfort and a soft, natural feel throughout the day.

Fabric Composition
100% Cotton.

Fit & Silhouette
Runner boxer silhouette inspired by military runner shorts, featuring side insets for a clean, athletic shape.

Rise
Mid-rise design that sits comfortably at the waist for a familiar, easy fit.

Inseam
3" inseam for a shorter length that allows freedom of movement without bulk.

Fly Construction
Functional button fly designed for everyday convenience and ease of use.

Leg Openings
Runner-style leg openings designed for comfort, airflow, and mobility.

Waistband
1.5" exposed elastic waistband with engineered C-IN2 branding.


Care Instructions
Machine wash.
Imported.


Core Collection

The Core collection is built around uncompromising comfort and everyday reliability. Made from premium 100% cotton, each piece delivers breathable softness and a natural feel designed for all-day wear.

As C-IN2’s most essential collection, Core offers a wide range of styles—built to fit seamlessly into your daily rotation while delivering consistent comfort and dependable support.

Boxer short style underwear
Semi-fitted
Mid-rise, sits at the natural waistline

Model's height is 6"1'/185 cm, and he is wearing size M.

100% cotton
Machine Wash
Imported

Get free shipping for US orders over $99.

Discreet packaging: plain poly bag or brown box.

For shipping info: C-IN2 Shipping.

Discreetly shipped in a plain brown box or poly bag.

SKU: 4019-070-XS

Complete the Set

Need help?

Send us an email at support@c-in2.com.

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4.8
Rated 4.8 out of 5 stars
Based on 256 reviews
Total 5 star reviews: 234 Total 4 star reviews: 12 Total 3 star reviews: 5 Total 2 star reviews: 2 Total 1 star reviews: 3
96%would recommend these products
Reviews Summary
Customers say these cotton boxers are super comfortable and perfect for lounging or sleeping. Many appreciate the great fit, with legs that stay snug without riding up while providing room to move freely. The lightweight material and variety of vibrant colors are frequently praised. Common feedback includes the excellent value, especially when on promotion, making many customers repeat buyers. Some mention sizing runs slightly large and recommend going down a size for a tighter fit. A few note the material feels rougher than expected or wish for moisture-wicking properties. Overall, users love the comfortable, loose-fitting style that works well under clothing or as sleepwear.
256 reviews
  • B
    Berwyn
    Reviewing
    Core Runner Boxer Yon Yellow
    I recommend this product
    Rated 5 out of 5 stars
    1 week ago
    5 Stars

    I love the cotton boxer underwear that i ordered. They are so nice and comfortable.

  • WC
    William C.
    Flag of United States
    Verified Buyer
    Reviewing
    Core Runner Boxer White
    I recommend this product
    Body Type Big Butt, Big Thighs
    Normal Size Worn L
    Size in Other Brands L
    Size Bought L
    Rated 5 out of 5 stars
    1 week ago
    I love the Core Runner

    I love the Core Runner Boxers! My favorites!

  • FU
    Frank U.
    Verified Buyer
    Reviewing
    Core Runner Boxer Yon Yellow
    I recommend this product
    Rated 5 out of 5 stars
    1 month ago
    Great color

    Great color

  • R
    Richard
    Reviewing
    Core Runner Boxer Kash Khaki
    I recommend this product
    Rated 5 out of 5 stars
    1 month ago
    5 Stars

    Great fit and super lightweight material. Super price and color. Repeat buyer for a reason.

  • R
    Richard
    Reviewing
    Core Runner Boxer Geoff Green
    I recommend this product
    Rated 5 out of 5 stars
    1 month ago
    5 Stars

    Great fit and color!