Jersey Bamboo Sport Trunks

Stars (31)


Ocean Blue

Their sleek fit and supportive comfort combined with ease of movement has made our sports trunks favourites with athletes and office workers alike. Now with keyhole fly. Our model is 6ft1″ and is wearing a size M.

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Welcome to the next generation. Considered craft, BAM-soft comfort, kindest to people & the planet. The BAM feeling is everything. Purposeful Activewear. BAM We Can.

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So BAM-soft comfortable you’ll want to live in it.

Once you try it, you’ll never go back. BAM softness & comfort is NEXT level. With astonishing comfort that naturally fights those nasty niffs, our kit is perfect against your skin. Question is, why are you still wearing itchy or plasticky alternatives?

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Next generation fabrics that change the game.

Move over synthetics, the next generation is here. Swap your fossil fuel fabrics for those crafted to be kindest to people & the planet. Made from naturally sourced or recycled materials with zero to landfill waste, they’re also born to perform. And then some.

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Crafted to get you active & be impact positive.

Each piece of BAM kit is crafted with purpose. From designing a fully circular range so items can be properly recycled creating zero landfill waste to individual details for maximum performance, we do our personal best so you can achieve yours.

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Every item kindest to people and the planet.

Our industry has been rightly called out for its impact on people & the planet. We’re leading the positive change. Already climate positive, we’re rethinking processes, innovating fabrics, working closely with who makes our clothes. Question is, why aren’t all clothes made this way?

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Positive impact of this product
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0.7 m2 of land
farmed without pesticides
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2.1 km
of driving emissions avoided
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93.9 days
of drinking water saved
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173.0 mgs
of pesticides avoided
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0.5 kg CO2e
of emissions avoided
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178.4 litres
of water saved
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What’s undercover matters most when it comes to comfort, and our bamboo sport trunks have legions of fans – not just for their incredible next-to-skin comfort, but also for their sleek form-fitting cut. Made in our soft, smooth and stretchily supportive 200gsm jersey, the fitted sports trunks have a longer fitted leg to prevent ‘ride up’, a supportive front pouch with fly/keyhole feature, and a soft jacquard-woven elasticated BAM waistband for a secure yet comfortable fit. Put them through their paces – these are true ‘performance pants’.

  • Sleek and supportive fit
  • Breathable comfort and ease of movement
  • Front pouch with fly/keyhole feature
  • Ideal underwear for sports and exercise
  • Softly elasticated jacquard BAM waistband

Classic Jersey


68% Bamboo Viscose, 28% Organic Cotton, 4% Elastane.

Supremely soft, smooth and comfortable. Imagine cotton T-shirt fabric only softer and smoother with a little stretch. As it's bamboo it's incredibly absorbent so it stays dry helping with temperature control - you stay cool in the heat, warm in the winter. There’s nothing better for next-to-skin comfort.

Wash on or below
30° C  |  86° F


Iron your garments on a medium heat.


Do not use bleach


Do not tumble dry.


Do not dry clean.


MEN's Bottoms - Size Guide

Inches CM

Fabric type: Jersey

To Fit WaistInchesCM
SS28 - 3171 - 79
MM31 - 3479 - 86
 L34 - 3686 - 91
LXL36 - 3991 - 99
 XXL39 - 4299 - 107

Fabric type: woven

To Fit WaistInchesCM
SS30 - 3276 - 81
MM32 - 3481 - 86
 L34 - 3686 - 91
LXL3895 - 98
 XXL40100 - 103

Reviews for Jersey Bamboo Sport Trunks

Independent Feedback based on 31 verified reviews.
Trusted Customer - Saturday, 13 March 2021
Yeah yeah very good thanks
HUGH WRIGLEY - Saturday, 13 March 2021
good for running and everyday use
Jonathan Lewis - Saturday, 6 March 2021
Now up to three pairs, I like the longer length, keeps everything together
Trusted Customer - Monday, 22 February 2021
Nice fit and good length choice of colours
Jasmin - Customer Service, BAM
- Wednesday, 24 February 2021
We're so pleased to hear that you like your new sport trunks!
Trusted Customer - Friday, 19 February 2021
Very comfortable great for running
Jasmin - Customer Service, BAM
- Friday, 19 February 2021
Enjoy your new sport trunks!
Bryan Walley - Saturday, 13 February 2021
Supportive, comfortable and feel nice against the skin
Amy - Customer Service, BAM
- Wednesday, 17 February 2021
Brilliant to hear you liked our sports trunks 😊
Lauren Tait - Thursday, 28 January 2021
My partner and I are slowly replacing our entire underwear drawer with bam pants and socks... we can’t wear anything else! So comfy you forget they are there
Amy - Customer Service, BAM
- Wednesday, 3 February 2021
Thank you for your lovely feedback 😊
Michael Chester - Thursday, 28 January 2021
I love the quality of BAM products.
Amy - Customer Service, BAM
- Wednesday, 3 February 2021
Fab to hear you loved our sports trunks 😊
Trusted Customer - Wednesday, 6 January 2021
Waist band too slack to avoid trunks slipping down
Chloe - Customer Service, BAM
- Friday, 8 January 2021
Sorry to hear this, this is not common feedback so do get in touch and we will be happy to help to find a solution.
M Webley - Tuesday, 29 December 2020
Great boxers. My husband wanted slightly longer ones than those we bought last year so he was really happy with these.
Jasmin - Customer Service, BAM
- Wednesday, 30 December 2020
Great to hear that your Husband loves his new sports trunks! 🙌
Independent Customer Feedback