Men’s cotton trunks designed for everyday comfort with a closer fit and structured feel. A reliable option for daily wear, featuring a keyhole fly opening.
Browse cotton trunks below or discover smooth, lightweight, bamboo softness in the Men’s Bamboo Boxers range.
Save 10% when you buy any 2 or more packs.
More Packs. Better Value
Designed for a close, supportive fit, these cotton keyhole trunks offer all-day comfort with a structured feel. The shorter leg helps prevent riding up, while breathable cotton keeps them comfortable, and a functional keyhole opening adds everyday practicality.
Shop Men's Underwear by Type
Browse Men’s Bamboo Trunks, Bamboo T-shirts, complete your rotation with Men's Everyday Socks or view the full range of Men's Underwear.
Need help choosing? See our Underwear Types Guide.
New to multipacks? Visit our Multipack Socks Guide.
Build Your Rotation
Most people just top up. Spairs is built for stocking up.
A proper rotation means having enough pairs to get through the week without running out.
Add a couple of packs, and you’re sorted for the week.
Combine Men’s Bamboo Socks and Bamboo Underwear for a soft, breathable underwear upgrade.
Built for Multibuy
Don't stop at one pack.
Add 2 or more packs and save 10%.
• Pay less per pair
• Fewer repeat orders
• One delivery — sorted
Do it once. Stock up properly.
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
Men's Cotton Trunks FAQs
Yes. Men’s cotton trunks are designed for everyday comfort, with a soft, breathable feel and a close, supportive fit. Cotton fabric helps keep you comfortable throughout the day, while a functional keyhole fly ensures easy use, making them ideal for daily wear.
Browse the Men's Bamboo Boxer Shorts range for more keyhole fly underwear.
Yes. Men’s cotton trunks are designed with a shorter leg and a secure, close fit that stays in place throughout the day. This helps prevent riding up, bunching or discomfort during everyday wear.
Looking for softer, breathable fabrics? Shop Men's Bamboo Underwear.
Yes. Men’s cotton trunks are available in multipacks, making it easier to stock up while getting better value per pair. Multipacks are ideal for everyday use, giving you a consistent supply without frequent reordering.