Men's bamboo trunks in 3-pair multipacks from £9.99. Close, supportive fit with a shorter leg and soft stretch bamboo that moves with you. Smooth and lightweight under clothing. Secure without feeling restrictive, even on long days.
Choose from plain, striped and bright styles. Prefer more coverage? Browse Bamboo Boxer Shorts or explore the full Men’s Bamboo Underwear range.
Save 10% when you buy any 2 or more packs.
The Bamboo Difference
Our men's bamboo trunks are made with soft, breathable bamboo fabric for everyday comfort. Naturally moisture-managing and gentle against the skin, whether you're at your desk, on the move, or unwinding at home.
Available in multipacks for better value, so you can stock up and always have fresh pairs ready.
Bamboo Trunks vs Bamboo Boxers
Bamboo trunks have a shorter leg and a closer fit, while bamboo boxer shorts offer more coverage with a longer leg and keyhole fly.
Choose trunks for a streamlined fit under clothing, or boxer shorts if you prefer extra coverage and a roomier feel.
Shop Men’s Bamboo Boxer Shorts or compare fits in the Men’s Bamboo Underwear range.
Choosing the Right Size and Fit
For the best bamboo trunks fit, measure your natural waist and check our Size Guide. Because men's bamboo trunks are designed with a closer fit, choosing the right size helps maximise everyday comfort.
If you're between sizes, sizing up is often the better choice.
Build Your Underwear Rotation
Most people just top up. Spairs is built for stocking up.
Multipacks make it easy to spread wear more evenly and keep fresh bamboo trunks ready to go.
Complete your essentials selection with Men's Bamboo T-Shirts, Men's Bamboo Socks and the full Men's Underwear collection.
Add a couple of packs and you're sorted.
1. CHOOSE →
Start with your first pack
2. ADD →
Another pack (or two)
3. UNLOCK →
10% Multibuy saving
4. STOCK UP
More pairs, lower price
Why Choose Men's Bamboo Trunks?
Men's Bamboo Trunks FAQs
Yes. Men’s bamboo trunks are designed for everyday comfort, with a close, supportive fit and a shorter leg than boxer shorts. Soft, breathable fabric helps keep you comfortable throughout the day, while a soft, flexible waistband sits securely on the hips without digging in or riding up.
For a longer leg fit with more coverage, shop the Men's Bamboo Boxers range.
Bamboo trunks have a shorter leg and a closer, more supportive fit than boxer shorts. They sit securely on the body, helping reduce movement and bunching while still offering soft, breathable comfort.
Yes. Bamboo trunks are designed with a close, supportive fit and flexible fabric that helps them stay in place without riding up or bunching.
Browse longer leg Men's Bamboo Boxer Shorts to compare fits.
Yes. Men’s bamboo trunks are available in multipacks, making it easier to stock up while getting better value per pair.
Complete your rotation with Men's Bamboo Socks.
Need help choosing? See our Boxer Shorts vs Trunks Guide or compare materials in our Bamboo Underwear Guide.