Back in 2021 I said bamboo boxers were the best blend of comfort, breathability and sustainability – and that still holds. What’s changed is how I judge them. I now split my week between cycling, football, desk time and travel, so I care about three things above all else:

• All-day comfort without hot spots (desk to bike to pitch)
• Shape retention after 100+ wash cycles (no baggy legs, no twisty waistbands)
• Chafe control on sweaty days (biking and mid-week 5-a-side matches)

Below are my updated picks, with quick notes on how each one fits that routine.

Best Overall (and Most Comfortable): FM London

Why the switch: I used to rank FM London as “most comfortable”; after long, mixed-use weeks they’ve taken top spot overall. The ergonomic cut hugs without squeezing, breathes well in warm weather, and the waistband stays flat on rides and during small-sided games. They’re also the pair I forget I’m wearing on a long-haul flight—which is the highest compliment I can give underwear.

Where they excel for me:

• Cycling: minimal seam awareness on the inner thigh; no roll.
• Five-a-side: enough hold to reduce bounce without feeling compressed.
• Travel: they dry overnight on a hotel hanger after a 30°C sink wash.

Pros

• Most “I don’t notice them” comfort I’ve found
• Hold their shape after repeated 30–40°C washes
• Inclusive sizing and clean, minimalist look

Cons

• I honestly don’t have any cons!

Runner-Up (Still Excellent All-Round): David Archy

I originally crowned these best overall, and they’re still a superb balance of softness, support and accurate sizing. For big training days they’re lovely; for full weeks that include lots of desk time and a flight, FM London edge them for me on long-wear comfort.

Pros

• Soft, breathable fabric with reliable sweat wicking
• Consistently accurate sizing; easy to buy online
• Durable if you keep washes gentle and under 40°C

Cons

• Waistband can feel a touch warmer on very long sits compared with FM London

Best Long-Leg (Anti-Ride-Up): Jinshi

If you prefer a longer inseam to stop ride-up, Jinshi still do that job well. Great on days with sprints or when I know I’ll be racking up steps. Note the sizing runs from about 32″ upwards, which isn’t ideal for smaller waists.

Pros

• Long leg drastically reduces wedgies on the move
• Secure stitching stands up to machine washing
• Plenty of colours if you like variety

Cons

• Not flattering under shorter shorts
• Limited options for smaller waists

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Best Loose Fit: Chill Boys

On recovery days or warm evenings, these breathe brilliantly and feel almost pyjama-like. They do ride up more than fitted trunks when you’re active, but for lounging they’re spot on.

Pros

• Airy, cool and genuinely comfortable for downtime
• Double as lightweight sleep shorts

Cons

• Ride-up if you’re walking briskly or cycling
• Style is basic, which may be exactly what you want

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Best for Sport Days: Obviously

With a bit more elastane and a longer inseam, these shine when I’m repeatedly accelerating, twisting or doing shuttle runs. The shaped pouch reduces friction on runs and makes bike commutes more pleasant.

Pros

• Flex and wicking suited to hard sessions
• Long inseam helps prevent chafe
• Pouch design is practical once you get used to it

Cons

• Overkill for a quiet desk day; I switch back to FM London

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Best Budget: EKQ

Still the most credible low-cost option if you want bamboo benefits without the price tag. Think supermarket basics plus better odour control. I keep a couple as backups.

Pros

• Cheap and cheerful entry point
• Flat(ter) stitching than typical budget packs
• Sizing has been reliable

Cons

• Comfort and anti-chafe performance lag behind my top picks
• Legs can creep during activity

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What I Got Wrong (or Underestimated) in 2021

• Comfort > everything on real-world days. Back then I weighted “specs” and first-wear softness more heavily. Four years on, I prioritise how they feel after hours of sitting, cycling, then playing. FM London win on that end-to-end comfort.
• Air-drying matters. Even the sturdy pairs last longer and hold shape better if you skip the tumble-dryer.
• Cut beats raw fabric claims. Breathability is great, but seam placement, leg length and waistband behaviour decide whether you chafe on hot days.

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How I Test Now (so you can map to your life)

• Football nights: 40-minute games with short warm-up and cooldown.
• Cycling: urban commutes and intervals—leg openings tested for creep.
• Travel: hand-wash at 30°C, overnight air-dry, 8–12 hours wear next day.
• Desk blocks: half-day sits to check heat build-up and waistband comfort.

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Buying Guide (2025, condensed)

Fit & Cut

• If you move a lot: choose a longer inseam or a pair with a grippy leg hem.
• If you desk-sit then train: go ergonomic trunks (FM London, David Archy).
• If you want airflow at home: loose fit like Chill Boys.

Fabric & Care

• Most use bamboo viscose/rayon with elastane for stretch. The fabric is naturally breathable; the pattern and seams decide chafe.
• Wash at 30–40°C, skip fabric softener, air-dry. This preserves stretch and waistband integrity.

Sizing

• Check the brand chart and your hip/waist in centimetres. If between sizes and you’re active, I prefer down for hold (unless a brand is known to run small).

Sustainability note

• Bamboo grows fast and needs fewer inputs than cotton, which is good. The viscose process is industrial; if sustainability is your priority, buy fewer, air-dry, and wear them longer by rotating pairs.

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Final word

In 2021 I led with lab-coat logic. In 2025 I’m led by real days – bike, ball, travel, repeat. If you want the set-and-forget choice, go FM London. If you want something almost as good with a touch more durability under gentle cycles, David Archy is still excellent. For sport-heavy weeks, keep Obviously in the drawer. And whatever you buy, air-dry them – it’s the easiest way to make any pair last.