The new shape of men’s fashion
C-Theory Sport Brief Nasr Navy
True to size. For loose fit, go one size up.
Fit
- Description
- Style and Fit
- Fabric and Care
- Shipping
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.
Complete the Set
Need help?
Send us an email at support@c-in2.com.
- Fit
- Comfort
- Appearance
- Quality
- Appeal
- ARAntonio R. G.Verified BuyerReviewingC-Theory Sport Brief Borris BlueI recommend this productBody Type TallHeight 5' 10-6' 0Normal Size Worn LSize in Other Brands MSize Bought LRated 5 out of 5 stars2 weeks agoC-Theory Sport Brief Borris Blue
Perfect fit
Was this helpful? - JJimReviewingC-Theory Sport Brief Pryce PurpleI recommend this productRated 5 out of 5 stars1 month ago5 Stars
Good leg room and flattering fit.
Was this helpful? - MPMichael P.Verified BuyerReviewingC-Theory Sport Brief Plato PinkI recommend this productBody Type SlimNormal Size Worn SSize in Other Brands SSize Bought SRated 5 out of 5 stars2 months agoBought 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
Was this helpful? - TSTim S.Verified BuyerReviewingC-Theory Sport Brief Godfry GreenI recommend this productBody Type StockyNormal Size Worn XLSize in Other Brands LSize Bought LRated 5 out of 5 stars2 months agoGreat Underwear
Great Underwear
Was this helpful? - RPRichard P.Verified BuyerReviewingC-Theory Sport Brief Timothy TealI recommend this productBody Type StockyNormal Size Worn LSize in Other Brands LSize Bought LRated 5 out of 5 stars2 months agoGreat flattering fit and style
Great flattering fit and style
Was this helpful?
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