Undz
5" Number 1 Dad Boxer Brief Polyester
Men's 5-inch inseam boxer briefs from Undz, a Canadian brand, made from stretch, ultra-light Maxvent microfibre polyester. They are designed for everyday wear, wicking moisture and drying quickly, with an elastic waistband and a double-layered front panel. The briefs feature a bold red 'Number 1 Dad' foam-finger graphic printed on both the front pouch and rear seat.
- Material
- Maxvent microfibre
- Gender
- male
- Style
- casual, sporty
- Category
- Apparel & Accessories > Clothing > Underwear & Socks > Underwear
Color
Size
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.
Screen-printed graphic bonds into polyester, resisting cracks and peeling.
Why this is supported
The 'Number 1 Dad' graphic is
typically screen-printed onto the polyester fabric.
How is the 'Number 1 Dad' graphic applied? Is it screen-printed or a heat transfer, and will it last through multiple washes?and, when properly cured, screen printing on polyester
holds up well through multiple washes
How is the 'Number 1 Dad' graphic applied? Is it screen-printed or a heat transfer, and will it last through multiple washes?. Unlike heat-transfer prints that can peel, this method bonds into the fibers.
- Wash care
Wash inside out in cold water; avoid bleach and high heat drying.
Why this is supported
To preserve the print, washing inside out in cold water protects from abrasion;
especially if you wash inside out in cold water and avoid bleach.
How is the 'Number 1 Dad' graphic applied? Is it screen-printed or a heat transfer, and will it last through multiple washes?Polyester's low moisture regain means cold washes don't cause distortion:
Under standard cold-wash laundering, raw polyester fibers exhibit a moisture regain of less than 1%.
sixdragonfabrics.comAvoid high-heat drying:
This triggers aggressive thermal contraction, deforming the garment pattern.
sixdragonfabrics.com- Construction
Double-layer front protects print from friction and keeps it opaque.
Why this is supported
The double-layered front shields the print from friction,
prolonging the brief's lifespan by protecting the print
Purpose and comfort of the double-layered front — reinforced_front_panel, and keeps it opaque:
keeps the 'Number 1 Dad' graphic opaque and readable
Purpose and comfort of the double-layered front — opacity_for_novelty_print. The 5-inch inseam and double-layer construction make
proper boxer briefs built for daily wear
The 'Number 1 Dad' design as a novelty gift — 5_inch_inseam_and_double_layered_front- Gift value
At $9.99 CAD, this Canadian-brand boxer brief carries the 'Number 1 Dad' message as a respectful, gift-worthy novelty.
Why this is supported
The 'Number 1 Dad' phrase imbues a sincerely paternal appreciation, elevating the item from a mere gag to a wearable affirmation suited for Father's Day or birthdays. Undz, a Canadian brand sold through Simons—a curated department store—adds a quality signal absent from generic print-on-demand gear, and the 53% markdown to $9.99 places it in the impulse-gift price range, lowering the barrier for a lighthearted yet thoughtful present.
- Material performance
95% polyester Maxvent with spandex: wicks moisture, dries quickly, supports screen-printed graphics with a double-layer front.
Why this is supported
The Maxvent fabric combines multiple functional traits: it
helps with moisture-wicking and quick drying
How does the Maxvent microfibre fabric feel against the skin compared to cotton? Is it soft or more like a slick synthetic?, and the 'Number 1 Dad' graphic
is typically screen-printed onto the polyester fabric.
How is the 'Number 1 Dad' graphic applied? Is it screen-printed or a heat transfer, and will it last through multiple washes?The double-layered front acts as a modesty panel, keeping the ultra-light fabric opaque and protecting the print from abrasion. The 5-inch inseam and elastic waistband provide a supportive fit; the waistband
stay in place during wear when the correct size is chosen
Does the elastic waistband tend to roll down or stay in place during wear?.
- Fabric care
Cold washing preserves shape; avoid heat drying above 80°C to prevent shrinkage.
Why this is supported
The polyester fibers
exhibit a moisture regain of less than 1%
sixdragonfabrics.com, meaning cold water won't cause shrinking, but high heat
triggers aggressive thermal contraction, deforming the garment pattern.
sixdragonfabrics.comUse low heat or air dry to maintain shape.
- Odor
Polyester fabric retains body oils and odors; we suggest washing after each wear.
Why this is supported
The fabric's construction carries a known trade-off:
polyester, unlike nylon, is oleophilic and will hold on to skin oils, where some body odor comes from.
outdoorgearlab.comThis means active users may need to wash the garment after each use to prevent odor buildup.
- Moisture management
Fabric wicks moisture and dries quickly, feels smooth and lighter than cotton.
Why this is supported
The fabric's surface is engineered for moisture transfer:
smooth, soft-to-the-touch feel that's lighter and more breathable than cotton, with a slicker surface that helps with moisture-wicking and quick drying
How does the Maxvent microfibre fabric feel against the skin compared to cotton? Is it soft or more like a slick synthetic?. This combination of softness and slickness makes the boxer briefs
genuinely practical for summer or active days
The 'Number 1 Dad' design as a novelty gift — maxvent_microfibre_functionality.
- Opacity
Ultra-light fabric may become semi-transparent under tension; double-layer front prevents show-through.
Why this is supported
The ultra-light Maxvent fabric, typical of high-denier-per-filament microfibers, can become slightly translucent when placed under tension. This is why the product uses a double-layer front: to maintain print legibility and prevent see-through on high-stretch body areas. No independent source contradicts this structural assessment.
- Durability
Double-layer front resists abrasion, fabric holds shape in cold wash, screen print lasts with proper care.
Why this is supported
Construction and care both support durability:
Under standard cold-wash laundering, raw polyester fibers exhibit a moisture regain of less than 1%
sixdragonfabrics.com, which means the fabric resists shrinking.
Screen printing on polyester, when done with quality inks and proper curing, holds up well through multiple washes—especially if you wash inside out in cold water and avoid bleach.
How is the 'Number 1 Dad' graphic applied? Is it screen-printed or a heat transfer, and will it last through multiple washes?. Additionally, the double-layer front adds abrasion resistance at a high-friction zone, further protecting the garment.
- Stay-put fit
Secure fit prevents rolling, riding up, and shifting during wear.
Why this is supported
The elastic waistband should stay in place during wear when the correct size is chosen, as the stretchy Maxvent microfibre and elastic waistband combination provides a secure fit without rolling.
Does the elastic waistband tend to roll down or stay in place during wear?The 5-inch inseam and double-layered front construction provide a modern, supportive silhouette that sits securely under pants
The 'Number 1 Dad' design as a novelty gift — 5_inch_inseam_and_double_layered_frontThe Maxvent microfibre is moisture-wicking and quick-drying, so the recipient gets a functional athletic-style boxer brief that is genuinely practical for summer or active days
The 'Number 1 Dad' design as a novelty gift — maxvent_microfibre_functionality- Shape retention
Fabric retains shape after washing without stretching out.
Why this is supported
Under standard cold-wash laundering, raw polyester fibers exhibit a moisture regain of less than 1%.
sixdragonfabrics.com- Brand story
Undz is a Canadian brand sold through Simons' Le 31 label.
Why this is supported
The brand's origin is confirmed:
Undz is a Canadian brand sold through the Quebec-based Simons department store under its Le 31 label
The 'Number 1 Dad' design as a novelty gift — undz_canadian_brand. This retail context further
subconsciously signaling to gift shoppers that the item meets a certain quality threshold and arrives in presentable, gift-ready packaging
The 'Number 1 Dad' design as a novelty gift — department_store_curation_via_simons, reinforcing its distinction from mass-produced alternatives.
- Sale price
At $9.99 CAD (53% off), it's an impulse gift supporting a Canadian brand.
Why this is supported
The research notes that
Priced at $9.99 CAD (a 53% markdown from the $20 regular price), the boxer briefs land in the impulse-gift and stocking-stuffer range
The 'Number 1 Dad' design as a novelty gift — 9_99_cad_sale_price_point, making it an easy entry point for gift-givers who value the local brand connection.
- Double-layer front
Double-layer front reinforces high-wear zones and ensures the graphic stays opaque.
Why this is supported
The double-layer front serves two purposes: it
reinforces a high-wear zone where inner thighs and outer garments create constant friction, prolonging the brief's lifespan by protecting the print and preventing premature thinning of the thin, stretchy fabric.
Purpose and comfort of the double-layered front — reinforced_front_panel, and it
acts as a built-in modesty panel that keeps the 'Number 1 Dad' graphic opaque and readable, preventing the design from muddying or revealing what's underneath.
Purpose and comfort of the double-layered front — opacity_for_novelty_printThese twin benefits make the boxer brief suitable for repeated daily wear beyond being a novelty gift.
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.