








Lumo Flex Cotton Boxer Briefs
Everyday comfort, made for men who run hot.
- ✓ Soft, breathable fabric built for daily wear
- ✓ Tagless, chafe-free waistband
- ✓ Holds its shape wash after wash
- ✓ Arrives in 3 to 10 business days with tracking
Size Guide
Measure your waist in inches. Between sizes? Go up for lounging, down for workouts.
| Size | S | M | L | XL | 2XL | 3XL | 4XL |
|---|---|---|---|---|---|---|---|
| Waist (in) | 28-30 | 31-33 | 34-36 | 37-39 | 40-43 | 44-47 | 48-50 |
Designed for modern men with active urban routines, these cotton boxer briefs offer exceptional comfort and flexibility. The breathable fabric combined with elastane ensures a soft feel and a secure anatomical fit. Perfect for everyday wear, providing freedom of movement and long-lasting comfort throughout the day.
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Material: Cotton with elastane stretch fabric
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Fit: Men's boxer brief anatomical fit
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Fabric: Breathable and soft-touch
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Pattern: Solid color minimalist design
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Recommended for: Daily wear and active routines
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Comfort: Flexible and body-adjusting
Machine wash cold. Holds shape, stretch and color, wash after wash.
Ships in 1–2 days, arrives in 3–10 with tracking. Free over $40. Unused returns within 60 days, see Refunds.
Built for the daily grind
Soft cotton with just enough stretch to move with you through commutes, workouts, and everything in between.
What's actually different
Designed for modern men with active urban routines, these cotton boxer briefs offer exceptional comfort and flexibility. The breathable fabric combined with elastane ensures a soft feel and a secure anatomical fit. Perfect for everyday wear, providing freedom of movement and long-lasting comfort throughout the day.
-
Material: Cotton with elastane stretch fabric
-
Fit: Men's boxer brief anatomical fit
-
Fabric: Breathable and soft-touch
-
Pattern: Solid color minimalist design
-
Recommended for: Daily wear and active routines
-
Comfort: Flexible and body-adjusting
It's not you. It's cheap fabric.
Stiff, scratchy basics wear out fast. Soft fabric and a real fit don't.
- Scratchy, stiff fabric
- Loses shape after a few washes
- Waistband digs in
- Soft, breathable fabric
- Holds its shape wash after wash
- Tagless, chafe-free waistband
Navy, black, or grey
Pick your shade and build a drawer that actually matches. Same fit, same comfort, three ways to wear it.
Why it's worth the drawer space
Soft fabric that moves with you, not against you.
Holds its shape and color wash after wash.
60-day comfort guarantee on every pair.
Part of the same drawer.
This pair is built on the same promise as every Lumo product: real sizes, honest fabric, and a 60-day guarantee if it's not right. Mix and match with the rest of the collection.
Questions
Measure your waist in inches and consult the chart below. Between sizes? Choose the larger one.
Exchange unworn items free or request a refund within 60 days.
Yes, cut for real bodies, not just the average frame. Check the Size Guide and measure before you order. Between sizes, go up.



