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The new shape of men’s fashion

C - Theory Sport Brief Borris Blue - C - IN2 New York
C - Theory Sport Brief Borris Blue - C - IN2 New York
C - Theory Sport Brief Borris Blue - C - IN2 New York
C - Theory Sport Brief Borris Blue - C - IN2 New York
4.8
Rated 4.8 out of 5 stars
78 Reviews

C-Theory Sport Brief Borris Blue

$22.40 USD Regular price $28.00 USD
Item is in stock Hurry, Only 0 Left! Item is out of stock Item is unavailable

Size Size chart

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

Fit

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SmallTrue to sizeLarge

Low-rise sport brief with bold contrast and freedom to move

The C-IN2 C-Theory Sport Brief is designed for guys who want an athletic, body-forward fit with less fabric and more mobility. Sitting low on the waist, this sport-focused silhouette opens up the thigh for easier movement while maintaining a clean, confident profile.

Crafted from a textured cotton–elastane blend, it delivers breathable comfort with flexible stretch that holds its shape through all-day wear. A sculpted 1-ply contour pouch provides natural support up front, while covered leg elastics keep the fit smooth and secure. Finished with a contrast-engineered waistband, this brief brings bold energy to everyday wear.


Fabric Type & Performance
Textured cotton fabric designed for breathable comfort, soft stretch, and everyday durability.

Fabric Composition
97% Cotton / 3% Elastane.

Fit & Silhouette
Sport brief silhouette with a streamlined, athletic shape designed for movement.

Rise
Low-rise design that sits below the natural waist for a clean, athletic fit.

Pouch Construction
1-ply contour pouch with center-seam construction for natural lift and supportive shaping.

Leg Openings
Covered elastic leg openings designed to stay smooth, secure, and comfortable during movement.

Waistband
1.5" exposed elastic waistband with bold C-IN2 branding for contrast and confident styling.


Care Instructions
Machine wash.
Imported.


C-Theory Collection

The C-Theory collection takes cues from color theory in fashion and art—where contrast and balance are used with intention. Solid, saturated fabric colors are paired with contrasting elastic details to create a bold look that feels deliberate, not loud.

Built on a textured cotton stretch fabric, C-Theory delivers everyday comfort with visual impact. It’s confident color, refined through proportion and contrast, designed to stand out without feeling overworked.

Brief style underwear
Low-rise, sits below the natural waistline

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

97% Cotton, 3% Elastane
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: 8014-481AS-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 78 reviews
Total 5 star reviews: 69 Total 4 star reviews: 5 Total 3 star reviews: 3 Total 2 star reviews: 1 Total 1 star reviews: 0
95%would recommend these products
Reviews Summary
Customers say this sport brief offers a perfect fit with great leg room and flattering style. The fabric feels light and comfortable, with many praising the snug, supportive pouch and stylish colors that let personality shine. Most find the fit true to size, though some note it runs slightly tight in the groin area. A few mention the waistband feels stiff or scratchy, and some wish the fabric were softer or more durable. Overall, customers love the comfort and design, with many becoming repeat buyers.
Customers Talked About
78 reviews
  • AR
    Antonio R. G.
    Verified Buyer
    Reviewing
    C-Theory Sport Brief Borris Blue
    I recommend this product
    Body Type Tall
    Height 5' 10-6' 0
    Normal Size Worn L
    Size in Other Brands M
    Size Bought L
    Rated 5 out of 5 stars
    2 weeks ago
    C-Theory Sport Brief Borris Blue

    Perfect fit

  • J
    Jim
    Reviewing
    C-Theory Sport Brief Pryce Purple
    I recommend this product
    Rated 5 out of 5 stars
    1 month ago
    5 Stars

    Good leg room and flattering fit.

  • MP
    Michael P.
    Verified Buyer
    Reviewing
    C-Theory Sport Brief Plato Pink
    I recommend this product
    Body Type Slim
    Normal Size Worn S
    Size in Other Brands S
    Size Bought S
    Rated 5 out of 5 stars
    2 months ago
    Bought these sexy underwear and

    Bought these sexy underwear and they look great on—stylish, flattering, and surprisingly comfortable. The fit is snug in the right places and boosts confidence. Definitely worth the money. I bought 3 more pair

  • TS
    Tim S.
    Verified Buyer
    Reviewing
    C-Theory Sport Brief Godfry Green
    I recommend this product
    Body Type Stocky
    Normal Size Worn XL
    Size in Other Brands L
    Size Bought L
    Rated 5 out of 5 stars
    2 months ago
    Great Underwear

    Great Underwear

  • RP
    Richard P.
    Verified Buyer
    Reviewing
    C-Theory Sport Brief Timothy Teal
    I recommend this product
    Body Type Stocky
    Normal Size Worn L
    Size in Other Brands L
    Size Bought L
    Rated 5 out of 5 stars
    2 months ago
    Great flattering fit and style

    Great flattering fit and style