
Undz
5" Number 1 Dad Boxer Brief Polyester
These Undz boxer briefs are made from stretchy, ultra-light Maxvent microfiber that wicks moisture and dries quickly. They feature a 5-inch inseam, an elastic waistband, and a double-layered front. The garment includes a large red foam-finger graphic print on the front and back.
- Material
- Maxvent microfibre
- Gender
- male
- Style
- casual, sporty
- Category
- Apparel & Accessories > Clothing > Underwear & Socks > Underwear
Color
Specifications
Stretch ultra-light boxer brief with moisture-wicking fabric and double layered front.
Ultra-light Maxvent microfibre, moisture-wicking, quick-drying, double layered front, elastic waistband.
- Material
- Maxvent microfibre
- Style
- casual, sporty
- Occasion
- everyday, gift
- Gender
- male
- Age Group
- adult
- Condition
- new
- Category
- Apparel & Accessories > Clothing > Underwear & Socks > Underwear
Additional Attributes
- stretch ultra-light Maxvent microfibre
- moisture-wicking fabric
- quick-drying
- elastic waistband
- double layered front panel
- 5-inch inseam
- boxer brief design
Product Insights
Unz's Number 1 Dad boxer brief, at a sale price of $9.99 CAD (53% off), combines a durable screen-printed graphic with a moisture-wicking 95% polyester Maxvent and spandex double-layer front that resists cracks, peeling, and opacity under tension for a stay-put fit and shape retention; however, the polyester fabric requires cold washing without bleach or high heat to avoid shrinkage and retains body odors necessitating washing after each wear, making it a gift-worthy novelty that demands careful upkeep.
Verified claims
- The 'Number 1 Dad' graphic is screen-printed onto the polyester and holds up through multiple washes when washed inside out in cold water and bleach is avoided.
- Wash care
- Wash inside out in cold water; avoid bleach and high heat drying.
- Construction
- Double-layer front protects print from friction and keeps it opaque.
- Gift value
- At $9.99 CAD, this Canadian-brand boxer brief carries the 'Number 1 Dad' message as a respectful, gift-worthy novelty.
- Material performance
- 95% polyester Maxvent with spandex: wicks moisture, dries quickly, supports screen-printed graphics with a double-layer front.
- Fabric care
- Cold washing preserves shape; avoid heat drying above 80°C to prevent shrinkage.
- Odor
- Polyester fabric retains body oils and odors; we suggest washing after each wear.
- Moisture management
- Maxvent microfibre feels smooth and soft to the touch, with a slicker surface than cotton; it wicks moisture and dries quickly.
- Opacity
- Ultra-light fabric may become semi-transparent under tension; double-layer front prevents show-through.
- Durability
- Double-layer front resists abrasion, fabric holds shape in cold wash, screen print lasts with proper care.
- Stay-put fit
- The elastic waistband stays in place without rolling during wear when the correct size is chosen.
- Shape retention
- Polyester does not absorb water and swell in a cold wash, so the fabric keeps its shape through normal laundering when the dryer stays below 80°C.
- Brand story
- Undz is a Canadian brand sold through Simons' Le 31 label.
- Sale price
- At $9.99 CAD (53% off), it's an impulse gift supporting a Canadian brand.
- Double-layer front
- Double-layer front reinforces high-wear zones and ensures the graphic stays opaque.
- Fit silhouette
- The 5-inch inseam and double-layered front create a modern, supportive silhouette that sits securely under pants.
Product record
- Title
- 5" Number 1 Dad Boxer Brief Polyester
- Brand
- Undz
- Price
- 20 CAD
- Availability
- In stock
Buying Guide
1 comparison · 8 sourcesProduct comparison
Compared within this brand.
| 5" Number 1 Dad Boxer Brief Polyester: Choose this if you want ultra-light, stretchy microfibre underwear that wicks moisture and dries quickly, in a form-fitting 5-inch-inseam boxer brief with a double-layered front and elastic waistband. It suits shoppers who enjoy a playful statement piece, with a large red foam-finger graphic printed on the front and seat of the bright blue fabric. Note it is made of 95% Maxvent polyester and 5% spandex and comes in small, medium, and large sizes.[1,2,3] | 5" Kong Boxer Brief Polyester: Choose this if you want a slim-fitting boxer brief in a stretchy, ultra-light Maxvent polyester (95% polyester, 5% spandex) that wicks moisture and dries quickly. It has a 5-inch inseam, double-layered front, and elastic waistband, and comes in sizes SMALL to X-LARGE in a Patterned Green jungle print with banana and ape motifs across the whole body — so it suits those who like bold, statement underwear rather than a plain look.[4,5] | 5" Tiger Boxer Brief Polyester: Choose this if you want a fitted, mid-thigh boxer brief with a 5-inch inseam in a stretchy, ultra-light Maxvent microfibre (95% polyester, 5% spandex) that the retailer says wicks moisture and dries quickly. It suits wearers who like bold style: an all-over orange tiger print on a very dark brown or near-black fabric, with yellow contrast stitching and a black elastic waistband with a small UNDZ label. It also has a double-layered front and a defined contoured pouch seam; note the saved listing shows only a SMALL size in Patterned Black.[6,7,8] |
Image Analysis
2 images- 01

Product
Front view of a pair of bright blue boxer briefs worn by a model showing a black elastic waistband with a centered blue label reading 'UNDZ' and a large red foam-finger graphic printed over the front pouch; fabric has a subtle swirl texture and visible stitched seams at the front and leg openings.
- Overall shapeForm-fitting mid-thigh boxer briefs shown on a model, with a defined front pouch and straight leg hems.
1 region
x 0.15 · y 0.45 · w 0.70 · h 0.45 (high) - WaistbandWide black elastic waistband encircling the waist, sitting flat against the body.
1 region
x 0.20 · y 0.36 · w 0.60 · h 0.06 (high) - Waistband label text“UNDZ”
1 region
x 0.46 · y 0.36 · w 0.07 · h 0.06 (high) - Front graphicLarge vertically oriented red foam-finger graphic printed centered on the front pouch, finger pointing upward; graphic includes thin yellow outline/drawing lines.
1 region
x 0.52 · y 0.52 · w 0.18 · h 0.33 (high) - Fabric surface patternSubtle tonal swirl/topographic pattern visible across the blue fabric surface.
1 region
x 0.18 · y 0.48 · w 0.64 · h 0.38 (high) - Seams and stitchingVisible stitched seams run vertically down the front pouch and along the inner leg; leg hems have a stitched folded finish.
1 region
x 0.40 · y 0.50 · w 0.34 · h 0.42 (high) - Fabric appearanceSmooth, slightly shiny stretch knit appearance consistent across the garment surface.
Other
Studio product shot cropped at the model's mid-torso and upper thighs against a neutral light gray background with soft even lighting and subtle shadows.
- Shot compositionCropped view showing model from just below the chest to mid-thigh, centered horizontally.
1 region
x 0.00 · y 0.00 · w 1.00 · h 1.00 (high) - BackgroundNeutral light gray background with even tone and no visible props.
1 region
x 0.00 · y 0.00 · w 1.00 · h 0.45 (high) - Lighting and shadowSoft studio lighting creating gentle shadows under the waistband and inner thigh areas, with highlight on the model's torso.
- Model presenceMale model wearing the product with both arms visible; no hands interacting with the garment except relaxed at sides.
1 region
x 0.00 · y 0.10 · w 1.00 · h 0.90 (high)
Colors
bright blue· main fabric#238CE2black· waistband#311C15medium cyan blue· waistband labelvivid red· front graphic#DB0413bright yellow· front graphic outline- Overall shapeForm-fitting mid-thigh boxer briefs shown on a model, with a defined front pouch and straight leg hems.
- 02

Product
Rear view of a male model wearing mid-thigh boxer briefs with a centered large red foam-finger graphic on the seat; black elastic waistband and all-over subtle circular swirl texture on blue fabric.
- View and fitRear-facing view showing boxer brief seat and upper thighs on a model; briefs sit at the natural waist with a snug mid-thigh leg length.
1 region
x 0.12 · y 0.30 · w 0.76 · h 0.58 (high) - WaistbandWide black elastic waistband with a vertical center seam at the middle back.
1 region
x 0.18 · y 0.33 · w 0.64 · h 0.05 (high) - Main fabricSingle-piece blue fabric covering the briefs with a subtle, repetitive swirl or topographic pattern visible across the surface.
1 region
x 0.15 · y 0.38 · w 0.70 · h 0.47 (high) - Center graphicLarge red foam-finger style graphic printed at the center of the seat, with a yellow outline and internal yellow line details depicting fingers and creases.
1 region
x 0.42 · y 0.45 · w 0.16 · h 0.33 (high) - Seat seamVertical center back seam visible where the waistband meets the fabric, aligning with the graphic's center.
1 region
x 0.48 · y 0.32 · w 0.02 · h 0.25 (medium)
Other
Studio product shot cropped at model shoulders and mid-thighs against a neutral light-gray background with soft even lighting and minimal shadows.
- Background and lightingEven, soft studio lighting on a plain light-gray background producing mild diffuse shadows along the model's sides.
- Crop and compositionImage cropped to show the model from just below the shoulders to mid-thigh; hands and arms appear at the outer edges and are partially visible.
1 region
x 0.00 · y 0.00 · w 1.00 · h 1.00 (low) - Image qualityHigh-resolution photograph with clear, sharp detail on fabric texture and printed graphic.
Colors
bright sky blue· main fabric#3B9CEBblack· waistbandvivid red· seat graphic#DB0413bright yellow· graphic outline and details- View and fitRear-facing view showing boxer brief seat and upper thighs on a model; briefs sit at the natural waist with a snug mid-thigh leg length.
Brand PDP Lookup
- Brand
- Undz
MEN BAMBOO - UNDZ PATTERN
Variants
3 SKUs| SKU | Title | Price | Avail |
|---|---|---|---|
| 4636849 | 5" Number 1 Dad Boxer Brief Polyester - Blue - Small | CA$9.99CA$20.00 | Yes |
| 4636850 | 5" Number 1 Dad Boxer Brief Polyester - Blue - Medium | CA$9.99CA$20.00 | Yes |
| 4636851 | 5" Number 1 Dad Boxer Brief Polyester - Blue - Large | CA$9.99CA$20.00 | Yes |