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The new shape of men’s fashion

Core Signature Low Rise Trunk White
Core Signature Low Rise Trunk White
Core Signature Low Rise Trunk White
Core Signature Low Rise Trunk White
Core Signature Low Rise Trunk White
Core Signature Low Rise Trunk White
4.4
Rated 4.4 out of 5 stars
285 Reviews

Core Signature Low Rise Trunk White

$30.00 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

12345
SmallTrue to sizeLarge

Modern cut. Classic comfort.

Trunks are for guys who want boxer-brief security without fabric halfway down the leg. Core's version: soft 100% cotton, a compact 3" inseam, and a clean square cut that never bunches under slim pants.


Fabric
100% Cotton. Soft, breathable, and natural against the skin — comfort that holds up wash after wash.

Fit & Silhouette
Men's low-rise cotton trunk — sits below the natural waist with a 3" inseam for a compact, streamlined fit.

Contour Pouch
Sculpted 2-ply contour pouch with center-seam construction — extra room and supportive shape, no bulk.

Leg Openings
Covered elastic leg openings sit flat at the upper thigh — no riding, no bunching.

Waistband
1.5" exposed elastic waistband with the new signature C-IN2 logo in repeat.

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.

Trunk style underwear
Low-rise, sits below 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: 100023-100-S

Complete the Set

Need help?

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

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4.4
Rated 4.4 out of 5 stars
Based on 285 reviews
86%would recommend these products
Reviews Summary
Customers say these trunks are comfortable and soft with good quality cotton material. Many praise the fit and support, though some note sizing inconsistencies. Several reviews mention they run small, with recommendations to order a size up. Common feedback includes appreciation for the low-rise design and snug fit, though some find the waistband loose or the leg bands not snug enough. A few customers report changes in manufacturing affecting fit compared to previous purchases. While most find them perfect for daily wear, some mention the crotch area feels restrictive or the low-rise sits very low on the hips.
Customers Talked About
285 reviews
  • GN
    Gary N.
    Verified Buyer
    Reviewing
    Core Low Rise Trunk Denim Blue
    Body Type Tall, Big Junk, Muscular
    Height 5' 10-6' 0
    Normal Size Worn L
    Size in Other Brands L
    Size Bought L
    Rated 3 out of 5 stars
    6 days ago
    Loose fit

    I absolutely love the style, the feel and look of this underwear. However, at the end of the day, they lost their shape and the elastic on the legs openings looked stretched. The support was gone. I did order a smaller size (medium) to see if that would work better for me.

  • DL
    David L.
    Verified Buyer
    Reviewing
    Core Low Rise Trunk Fir Green
    I recommend this product
    Body Type Slim, Big Junk
    Height 5' 10-6' 0
    Normal Size Worn M
    Size in Other Brands M
    Size Bought M
    Rated 5 out of 5 stars
    Yesterday
    The return of the 4023

    After wearing the 4023 for 20+ years, my disappointment when they were discontinued was pretty deep; seeing that they have returned totally thrilled me. They are identical to my previous pairs in fit and workmanship; now if they would only be offered in Black again... In the meantime, I am a very happy guy, and I imagine I'm not the only one. Please keep them in the line, and please don't ever change them!

    C-IN2 New York
    Yesterday

    Hi David,

    Were thrilled to hear the Core Low Rise Trunk brings back those great memories! Thanks for your loyalty over the years, and well keep your feedback about Black in mind.

    Best regards,
    Tom

  • JS
    Jon S.
    Verified Buyer
    Reviewing
    Core Signature Low Rise Trunk White
    Body Type Slim, Muscular
    Height 5' 7-5' 9
    Normal Size Worn M
    Size in Other Brands S
    Size Bought M
    Rated 3 out of 5 stars
    1 week ago
    Saggy product

    As a long time purchaser of Core Signature Low Rise Trunks I have been disappointed with the fit and fabric used for the trunks that I recently purchased from C-IN2. In short, they do not provide me with the support that I experienced with earlier produced trunks. Could it be that a different manufacturer and fabric is being used today, as contrasted with the product offered by C-IN2 around 5 years ago?

  • BT
    Bela T.
    Verified Buyer
    Reviewing
    Core Low Rise Trunk Grey Heather
    I recommend this product
    Rated 5 out of 5 stars
    1 week ago
    Core Low Rise Trunk

    Great fit on these trunks....the only type I wear.

    Just wish there were more colors :-)

    C-IN2 New York
    1 week ago

    Hi Bela,

    Thanks so much for the great feedback on the Core Low Rise Trunk! We're thrilled you love the fit. We'll definitely take your color suggestion to heart for future collections.

    Best regards,
    Tom

  • DL
    David L.
    Verified Buyer
    Reviewing
    Core Signature Low Rise Trunk Black
    I recommend this product
    Body Type Slim
    Height 5' 10-6' 0
    Normal Size Worn M
    Size in Other Brands M
    Size Bought M
    Rated 4 out of 5 stars
    2 weeks ago
    Disappointed

    I've been wearing the 4023 Core Low Rise Trunk M exclusively for 20+ years, and was crushed when they were discontinued. So i was thrilled to discover that what looked like the exact same trunks were available again, albeit with a style number 100023, which i assumed to be a continuation of the 4023; they certainly look the same in the photos. I also have at least a dozen pairs to compare them to. Alas. The fit is not quite the same; they're a bit larger all around, and saggy and looser where they used to be perfectly snug. So, not as comfortable. Don't know where the difference lies: perhaps a slightly different fabric, or an adjusted cut? They're close, but not the same. So disappointed.