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The new shape of men’s fashion

Core Low Rise Trunk Black (Smooth Leg Finish)
Core Low Rise Trunk Black (Smooth Leg Finish)
Core Low Rise Trunk Black (Smooth Leg Finish)
Core Low Rise Trunk Black (Smooth Leg Finish)
4.4
Rated 4.4 out of 5 stars
296 Reviews

Core Low Rise Trunk Black (Smooth Leg Finish)

30% OFF at checkout
$21.00 USD Regular price $30.00 USD
Item is in stock Hurry, Only 0 Left! Item is out of stock Item is unavailable

ColorBLACK
Size Size chart

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

Fit

12345
SmallTrue to sizeLarge

Less bulk at the leg. Same trunk you trust.

The Core trunk, refined: a shorter 2.5" inseam and a smooth leg finish that lies flat on the thigh. Everything that made it a daily pick stays — the soft cotton, the supportive pouch, the square cut — minus the bulk at the opening.


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 shorter 2.5" inseam for a cleaner, more compact fit.

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

Smooth Leg Finish
Refined low-bulk elastic lies flat on the thigh — no pinching, no ridge, invisible under slim pants.

Waistband
1.5" exposed elastic waistband with C-IN2 branding — the signature above the square cut.

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: 4053-001-XS

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 296 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
296 reviews
  • WH
    William H.
    Verified Buyer
    Reviewing
    Core Low Rise Trunk Black (Smooth Leg Finish)
    I recommend this product
    Body Type Slim
    Height 5' 7-5' 9
    Normal Size Worn XS
    Size in Other Brands XS
    Size Bought XS
    Rated 4 out of 5 stars
    38 minutes ago
    Good

    Pretty good

    C-IN2 New York
    4 minutes ago

    Hello William,

    Thank you for the wonderful review! We're glad you're enjoying the Core Low Rise Trunk. We appreciate your support!

  • VB
    Victor B.
    Verified Buyer
    Reviewing
    Core Low Rise Trunk Black (Smooth Leg Finish)
    Body Type Tall, Muscular
    Height 5' 10-6' 0
    Normal Size Worn M
    Size in Other Brands M
    Size Bought M
    Rated 3 out of 5 stars
    10 hours ago
    Trunks

    Looses its shape very soon. Lower bands area around the thighs are made too thin, it cuts through skin and is irritatting.

  • JB
    James B.
    Verified Buyer
    Reviewing
    Core Low Rise Trunk White
    I recommend this product
    Body Type Big Butt
    Height 5' 10-6' 0
    Normal Size Worn L
    Size in Other Brands L
    Size Bought L
    Rated 5 out of 5 stars
    1 week ago
    Another great pair of undies! C-in2 never lets me down

    I normally wear the low rise briefs in L. Butt, my boyfriend is after me to try new things and I thought this would be a good change that isn't too big of a change. As always C-in2 feel great and the fit in all the right places and keep thing where the need to be. I honestly can't keep them on long because now the BF is always trying to take them off!

    C-IN2 New York
    1 week ago

    Hello James,

    Thank you for the wonderful review! We're so glad you're loving the Core Low Rise Trunk and that it's been a great addition to your collection.

    Best,
    C-IN2

  • PL
    Phillip L.
    Verified Buyer
    Reviewing
    Core Low Rise Trunk Black (Smooth Leg Finish)
    I recommend this product
    Body Type Tall
    Height 6' 1 or above
    Normal Size Worn L
    Size in Other Brands L
    Size Bought XL
    Rated 5 out of 5 stars
    2 weeks ago
    Love it

    Good fit and comfortable.

  • RC
    Robert C.
    Verified Buyer
    Reviewing
    Core Low Rise Trunk Grey Heather
    I recommend this product
    Body Type Muscular
    Height 5' 7-5' 9
    Normal Size Worn S
    Size in Other Brands S
    Size Bought S
    Rated 5 out of 5 stars
    1 month ago
    Excellent

    Low Rise check

    Package space check

    Cotton check

    Muscular 147 lbs 5’8”