The new shape of men’s fashion
Core Runner Boxer Black
True to size. For loose fit, go one size up.
Fit
- Description
- Style and Fit
- Fabric and Care
- Shipping
Built like runner shorts. Worn like a Sunday.
Borrowed from classic military runner shorts and cut for the weekend. The Core Runner Boxer is loose where you want air, shaped by signature side insets so it never reads boxy, and soft 100% cotton everywhere.
Fabric
100% Cotton. Soft, breathable, and natural against the skin — the boxer you sleep in, lounge in, and forget you're wearing.
Fit & Silhouette
Men's cotton runner boxer, semi-fitted and mid-rise — sits at the natural waist with a 3" inseam that frees the leg without the flap of a traditional boxer.
Side Insets
Signature side insets shape the leg opening the way runner shorts do — a cleaner line and more room to move.
Fly
Functional button fly — the classic detail, kept because it works.
Leg Openings
Runner-style openings move air freely and never cling to the thigh.
Waistband
1.5" exposed elastic waistband with C-IN2 branding — the one structured thing about it.
Fit note
True to size. For a looser fit, go one size up.
Care
Machine wash.
Imported.
Core
C-IN2's foundation — every essential silhouette, cut in soft, breathable 100% cotton that feels better the longer you own it. The drawer you build once and reach for every day.
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.
- Comfort
- Fit
- Quality
- Material
- Appearance
- HAHarold A.Verified BuyerReviewingCore Runner Boxer Geir GreenI recommend this productBody Type MuscularHeight 5' 4-5' 6Normal Size Worn SSize in Other Brands SSize Bought MRated 5 out of 5 stars3 weeks agoI am amazed…
The Geir Green color looks even better in person. These boxers fit perfectly and feel very comfortable with enough stretch and support. I like how the fabric stays cool and smooth even after wearing them for hours. The waistband feels secure without being too tight, and the overall quality feels premium. I’d definitely purchase more colors in this style.
- HAHarold A.Verified BuyerReviewingCore Runner Boxer Grey HeatherI recommend this productBody Type MuscularHeight 5' 4-5' 6Normal Size Worn SSize in Other Brands SSize Bought MRated 5 out of 5 stars3 weeks agoI love this boxer.
I’ve worn these a few times already and I’m really impressed with the comfort and fit. The material feels soft, breathable, and lightweight while still giving good support throughout the day. The Grey Heather color looks clean and stylish, and the fit stays comfortable without riding up. Great for both everyday wear and workouts. Definitely one of my favorite boxer styles from C-IN2.
- MTmario t.Verified BuyerReviewingCore Runner Boxer Bond BlueI recommend this productBody Type ShortHeight 5' 4-5' 6Normal Size Worn SSize in Other Brands SSize Bought MRated 5 out of 5 stars4 minutes agoSoft with enough "freedom" for the boys!
Bought this pair for my boyfriend, but I already tried also. The fabric feels really comfortable, and the fitting is great, no too tight for your buddy and friends
- MDMalov D.Verified BuyerReviewingCore Runner Boxer WhiteI recommend this productBody Type SlimHeight 5' 10-6' 0Normal Size Worn MSize in Other Brands MSize Bought MRated 5 out of 5 stars3 days agoVery good
Very good
- DNDilshod N.Verified ReviewerReviewingCore Runner Boxer WhiteBody Type MuscularHeight 5' 7-5' 9Normal Size Worn MSize in Other Brands MSize Bought MRated 3 out of 5 stars1 week agoWrong color shipped
I ordered white and blue colors but they shipped both white . Overall, the quality of the product is good.