The new shape of men’s fashion
Prime Bi-Fly Brief Nabil Neutral
True to size. For loose fit, go one size up.
Fit
- Description
- Style and Fit
- Fabric and Care
- Shipping
Disclaimer: Compostable bag may arrive torn. Product is brand new. Details below.
Effortless function, thoughtfully refined.
The C-IN2 Prime Bi-Fly Brief reimagines a classic mid-rise silhouette with elevated construction and discreet innovation. Crafted from a soft, breathable cotton–lyocell blend, it delivers a smooth, lightweight feel designed for all-day ease.
A distinctive dual-functioning fly—accessible from either side of the pouch—adds everyday convenience without disrupting the clean lines of the brief. The partial 2-ply contour pouch provides gentle structure and support, while covered elastic leg openings ensure a secure, comfortable fit. Finished with C-IN2’s dynamic logo waistband, this is a modern essential defined by quiet detail and considered design.
Features
Bi-Fly Design
Dual functional fly openings on both sides of the pouch for added convenience.
Cotton–Lyocell Blend
Ultra-soft, breathable fabric with a smooth, elevated hand feel.
Partial 2-Ply Contour Pouch
Light structure at the front for sculpted comfort and support.
Mid Rise Fit
Classic silhouette offering balanced coverage and everyday wearability.
Covered Elastic Leg Openings
Clean, stay-put fit designed for long-term comfort.
Exposed Logo Waistband
1.18" elastic with C-IN2’s dynamic branding for a refined finish.
Packaging Disclaimer
We tried to do better for the planet, but this one didn't work out. To reduce our environmental impact, we packed select underwear styles in this collection in compostable bags. Some of these bags broke down sooner than we expected, so yours may arrive torn or damaged. We're sorry about that.
The underwear inside is brand new and unworn. If it's a gift, the bag may not be gift-ready. All other C-IN2 products are unaffected.
Model's height is 6'1"/185 cm, and he is wearing size M.
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
- Color
- Material
- Quality
- CEChristopher E. J.Verified BuyerReviewingPrime Bi-Fly Brief Garo GreenI recommend this productRated 5 out of 5 stars16 hours agoGreat fit
Love the elastic around the legs especially under the butt! Usually this area stretches out quickly but not these! Makes comfortable all day.
C-IN2 New York15 hours agoHello Christopher,
Thank you for the wonderful review! We're thrilled you're loving the fit and durability of the Prime Bi-Fly Brief. Your support means everything to us!
Best,
C-IN2 - ZJzexi j.Verified BuyerReviewingPrime Bi-Fly Brief Nabil NeutralI do not recommend this productRated 1 out of 5 stars2 weeks agotoo tight
I am 173cm tall and weigh 60kg, way too tight, especially around my thighs, a waster of money
- NPNORBERT P.Verified BuyerReviewingPrime Bi-Fly Brief Garo GreenI recommend this productRated 5 out of 5 stars2 months agotop slip
passt hervorragend und sieht toll aus. man fühlt sich wohl in dieser hose.
- RSRalf S.Verified BuyerReviewingPrime Bi-Fly Brief Garo GreenI recommend this productRated 5 out of 5 stars2 months agoSuper
Super Qualität
- AMAlan M.Verified BuyerReviewingPrime Bi-Fly Brief Garo GreenI recommend this productRated 4 out of 5 stars2 months agoFun color
Fun color and comfortable fit. Not as form fitting snug as all my other CIN2 underwear but solid