
Undz
5" Rally Car Boxer Brief Polyester
The 5" Rally Car Boxer Brief is a pair of men's fitted boxer briefs made from stretch, ultra-light Maxvent microfibre polyester that wicks moisture and dries quickly. Key specifications include a 5-inch inseam, elastic waistband, double-layered front panel, and a photographic rally car print across the front and back. This product is by Undz, a Canadian brand available at Le 31.
- Material
- Maxvent microfibre
- Category
- Apparel & Accessories > Clothing > Underwear & Socks > Underwear
Color
Specifications
Stretch ultra-light Maxvent microfibre boxer briefs with moisture-wicking and quick-drying properties, elastic waistband, and double layered front.
Ultra-light Maxvent microfibre, moisture wicking, quick drying, elastic waistband, double layered front, 5 inch inseam.
- Material
- Maxvent microfibre
- Gender
- male
- Age Group
- adult
- Condition
- new
- Category
- Apparel & Accessories > Clothing > Underwear & Socks > Underwear
Additional Attributes
- Stretch ultra-light Maxvent microfibre
- Moisture-wicking and quick-drying fabric
- Elastic waistband
- Double layered front
- 5-inch inseam
Product Insights
These 5" Rally Car Boxer Briefs from Undz wick sweat and dry up to five times faster than cotton, with a cool initial touch and a smooth microfibre surface that minimizes friction and bunching. The double-layered front panel and absent fly reduce internal seams and chafing while providing pouch support, and the fabric withstands over 30,000 Martindale cycles for durability. However, their polyester microfibre traps odor-causing bacteria, requiring washing inside-out with sports detergent and avoiding fabric softener; cold gentle washing and air drying preserve elasticity and wicking performance.
Verified claims
- Wicking
- Wicks sweat and dries up to 5 times faster than cotton.
- Fabric softener
- Avoid fabric softener to maintain moisture-wicking performance.
- Durability
- Fabric withstands over 30,000 Martindale abrasion cycles, resisting pilling and thinning after repeated wear-and-wash cycles.
- Cool touch
- Immediate cool feel on first wear, strongest initially.
- Friction reduction
- Smooth microfibre surface minimizes friction and fabric bunching under clothing.
- Seam comfort
- Double-layered front panel and absent fly reduce internal seams and chafing.
- Pouch support
- Double-layered front acts as an integrated contour pouch, providing coverage and support without a separate fly panel.
- Fabric performance
- Both front layers use Maxvent microfibre for active moisture wicking and all-day breathability.
- Odor
- 95% polyester microfibre traps odor-causing bacteria from sweat.
- Washing recommendations
- Turn boxer briefs inside-out before washing and use sports detergent to manage odor.
- Design mitigation
- Double front panel wicks sweat away from the skin, preventing the damp cling that can occur when a second layer is added.
- Abrasion resistance
- Fabric exceeds 30,000 Martindale abrasion cycles, about double cotton.
- Fabric care
- Cold water wash, gentle cycle, and air drying preserve the fabric's elasticity and prevent pilling.
Product record
- Title
- 5" Rally Car Boxer Brief Polyester
- Brand
- Undz
- Price
- 20 CAD
- Availability
- In stock
Buying Guide
1 comparison · 8 sourcesProduct comparison
Compared within this brand.
| 5" Rally Car Boxer Brief Polyester: Choose this if you want a bold, photo-print boxer brief: it features a full photographic rally car graphic on a light blue background with a wide black elastic waistband, a 5-inch inseam cut fitted to upper-to-mid thigh, and a double-layered front with a vertical pouch seam. Its ultra-light stretch Maxvent microfibre (95% polyester, 5% spandex) wicks moisture and dries quickly, which suits active wear or workouts. Note it comes in only small and medium sizes in a single Patterned Blue colorway.[1,2,3] | 5" Kong Boxer Brief Polyester: Choose this if you want a slim-fit, 5-inch-inseam boxer brief in a lightweight, stretchy Maxvent microfibre (95% polyester, 5% spandex) that wicks moisture and dries quickly. It suits shoppers who like a bold look: this Patterned Green variant has a full-coverage jungle print with banana bunch and ape motifs, a light green elastic waistband, and a double-layered front. It comes in sizes SMALL through X-LARGE, all in this one print.[4,5] | 5" Tiger Boxer Brief Polyester: Choose this if you want a fitted, mid-thigh boxer brief with a bold look: it has an all-over orange tiger print on a dark fabric, yellow contrast stitching, and a black elastic waistband with a small yellow UNDZ label. Made of stretchy, ultra-light 95% Maxvent polyester and 5% spandex microfibre, it wicks moisture and dries quickly, with a double-layered front, contoured pouch seam, and a 5 inch inseam. Note that the listed variant is only size Small in Patterned Black.[6,7,8] |
Image Analysis
2 images- 01

Product
Pair of fitted boxer briefs shown on a male model from mid-chest to mid-thigh; a wide black elastic waistband with a small centered light-blue rectangular brand label is visible. The front panel features a full-coverage photographic rally car print with a vertical front pouch seam.
- Overall silhouetteFitted mid-thigh boxer brief cut displayed on a model, waistband sits at natural waist, legs extend to upper to mid-thigh.
1 region
x 0.12 · y 0.34 · w 0.76 · h 0.56 (high) - WaistbandWide black elastic waistband wrapping around the waist with a centered sewn-on rectangular light-blue label bearing the brand text.
1 region
x 0.22 · y 0.33 · w 0.56 · h 0.06 (high) - Front pouch seamSingle vertical seam runs down the center front from the waistband to the crotch area creating a defined pouch contour.
1 region
x 0.45 · y 0.38 · w 0.10 · h 0.30 (high) - Printed front panelPhotographic rally car graphic printed across the entire front panel and upper thighs, covering both left and right panels and wrapping slightly toward the sides.
1 region
x 0.18 · y 0.44 · w 0.64 · h 0.40 (high) - Leg openingsLeg openings have a narrow folded hem with a smooth finish, lying flat against the model's thighs.
1 region
x 0.18 · y 0.78 · w 0.64 · h 0.12 (high) - Fabric appearanceSmooth, slightly glossy knit surface consistent with synthetic performance fabric; print detail is high-resolution and continuous over seams.
- Graphic text on car“UNDZ RACING”
1 region
x 0.32 · y 0.46 · w 0.36 · h 0.06 (high) - Waistband label text“UNDZ”
1 region
x 0.47 · y 0.34 · w 0.06 · h 0.04 (high)
Other
Studio product shot cropped at the model's mid-chest and mid-thigh against a light neutral background; even soft lighting with minor shadows and visible model hands at image sides.
- Shot framingImage cropped from just below the model's pectorals to just above mid-thigh, centering the underwear front panel.
1 region
x 0.00 · y 0.00 · w 1.00 · h 1.00 (high) - BackgroundSmooth light grey background with even studio lighting and soft shadow along the model's left side.
- Model presenceMale torso and upper legs visible; both hands appear near the image lower corners with fingers relaxed.
1 region
x 0.00 · y 0.00 · w 1.00 · h 1.00 (high)
Colors
black· waistbandlight cyan· waistband labelsky blue· main fabric background#9CC4E3white· car body#F3EBEBbright red· car stripe and roof banner#A56A4Bmud brown· mud and tire areas- Overall silhouetteFitted mid-thigh boxer brief cut displayed on a model, waistband sits at natural waist, legs extend to upper to mid-thigh.
- 02

Product
Rear view of a pair of printed boxer briefs worn by a model; black elastic waistband and a photographic rally car print across the seat and upper thighs on a light blue background.
- Overall silhouetteForm-fitting mid-thigh boxer brief cut worn on a model, rear view showing waistband at natural waist and leg openings at upper to mid-thigh.
1 region
x 0.14 · y 0.20 · w 0.72 · h 0.62 (high) - WaistbandPlain elastic waistband in solid black with a centered vertical seam at the back.
1 region
x 0.24 · y 0.33 · w 0.52 · h 0.06 (high) - Main fabric and print placementLight blue base fabric with a full photographic print that wraps across the seat and upper legs; main graphic is a rally car positioned across the buttocks with the car facing left on the wearer's right.
1 region
x 0.18 · y 0.39 · w 0.64 · h 0.46 (high) - Car windshield text“UNDZ RACING”
1 region
x 0.28 · y 0.46 · w 0.36 · h 0.07 (high) - Front license plate text“334 RS 683”Partial
1 region
x 0.20 · y 0.56 · w 0.20 · h 0.08 (medium) - Print conditionPhotographic print includes realistic mud splatter and dirt on the car body and wheels, visible texture from the printed image.
1 region
x 0.22 · y 0.48 · w 0.46 · h 0.28 (high) - Side seam detailVisible vertical side seam on the wearer's right side, running from waistband to leg opening with light stitching visible.
1 region
x 0.74 · y 0.36 · w 0.06 · h 0.44 (high)
Other
Studio rear-shot of a model cropped at mid-back and mid-thigh on a neutral light gray background with even lighting and soft shadows.
- Shot compositionCentered rear-facing model cropped from just below the shoulder blades to mid-thigh; product and model fill most of the frame.
1 region
x 0.06 · y 0.05 · w 0.88 · h 0.90 (high) - BackgroundSmooth neutral light gray background with no visible props or textures.
- Lighting and shadowEven soft studio lighting with subtle shadowing around the model's legs and lower back, no strong directional glare.
- Model hands and armsModel's arms hang naturally at sides with hands visible near the outer frame edges; hands are not interacting with the product.
2 regions
x 0.02 · y 0.55 · w 0.12 · h 0.34 (high); x 0.86 · y 0.55 · w 0.12 · h 0.34 (high)
Colors
black· waistband#3B1504light sky blue· main fabric background#A4CCEBwhite· car bodyracing red· car red accentsmud brown· mud and dirtdark charcoal· tires and grille- Overall silhouetteForm-fitting mid-thigh boxer brief cut worn on a model, rear view showing waistband at natural waist and leg openings at upper to mid-thigh.