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Choosing men’s trunks: how to find comfortable underwear for every day

A new set of men’s trunks might seem like a simple purchase, but small differences in fabric, fit and waistband can affect how comfortable they feel throughout the day. A low price can be tempting, but a stiff waistband, confusing sizing or delicate fabric may cause frustration later on.

This guide explains what to look for in men’s boxer shorts, multipacks of men’s trunks and men’s sports underwear. Then we recommend three options for different needs.

Common pitfalls when choosing men’s underwear

1. Focusing only on the brand or colour

A familiar brand name doesn’t automatically mean the fit will suit your body. Calvin Klein trunks, Lee trunks, Wrangler trunks and Reebok trunks vary in their cut, leg length, rise and fabric composition. Always check the product details and size guide.

2. Assuming “breathable” means the same thing for every fabric

Several brands describe their fabrics as breathable or moisture-wicking in their own product information. That can be useful, but the feel may vary from person to person. Check the fibre composition too. Cotton generally feels soft, while polyester and elastane can help fabrics dry more quickly and provide extra stretch.

3. Buying a multipack without comparing the price per pair

A 3-pack or 5-pack of men’s boxer shorts is practical, but it isn’t automatically better value. Divide the total price by the number of pairs, and check whether they’re all the same colour, size and style. Some offers feature one model in the main product image, even though the multipack colours may vary.

The key details to check when choosing

Material and fibre composition

Check the proportions of cotton, polyester and elastane on the product label or in the product description. Cotton trunks are popular for everyday wear because of their soft feel. Elastane adds stretch, which can be useful when sitting, cycling or moving around.

Under European textile labelling rules, the fibre composition must be clearly stated. Check the care instructions too: some models recommend machine washing, ironing at a low temperature and avoiding tumble drying. Following these instructions can help the fit and waistband last longer.

Fit and waistband

Trunks should feel secure without digging into your skin. Look out for:

  • Low-rise or mid-rise: a low-rise style sits lower on the hips, while a mid-rise style offers more coverage.
  • Fitted or relaxed fit: a fitted style usually sits closer to the body, while a relaxed fit gives you more room.
  • Elasticated waistband: check that it feels flexible and doesn’t curl over easily.
  • Leg length: longer legs may provide extra coverage under some trousers, while shorter trunks can feel less noticeable.

If you’re unsure, measure your waist in centimetres and compare it with the specific size guide. Sizing can vary between brands. For example, some Lee styles list waist measurements of 70–75 cm for S and 76–81 cm for M. So don’t rely on the S, M, L or XL label alone.

Everyday wear or sport

For work and everyday wear, consider soft fabrics, a secure waistband and a fit that doesn’t feel restrictive. For sport or an active lifestyle, stretch, freedom of movement and a smooth finish are worth looking for. Claims about reduced friction or moisture management come from brands’ product descriptions. Treat them as product information, not a guarantee for every wearer.

Recommended men’s trunks for different needs

Ideal for: Beginners on a budget
Calvin Klein Relaxed Fit Trunk 3P UB1 Black Men's L

Calvin Klein Relaxed Fit Trunk 3P. UB1 Black Men L

Why it suits this profile: A 3-pack of black trunks is a practical starting point for everyday wear. According to the product description, this style is made from soft cotton with elastane and has an elasticated waistband.

How this product avoids the pitfall

The pack makes it easy to work out the price per pair and specifies a fitted cut, size L and care instructions. Before buying, check that L is right for your waist measurement.

Key benefits and features

3 pairs, black, cotton with elastane and machine washable according to the product information.

Ideal for: Shoppers looking for premium quality
Lee Trunk Innes Blacks Whites Grey Marl M

Lee Trunk Innes Blacks/Whites/Grey Marl M

Why it suits this profile: This 5-pack is a good choice if you want enough pairs for several working days without having to order more underwear often. The product description specifies a low-rise fit, stretch and a cotton, polyester and elastane blend.

How this product avoids the pitfall

The composition is clearly stated as 57% cotton, 38% polyester and 5% elastane. This makes it easier to choose a style that suits your preference for softness and stretch.

Key benefits and features

5 pairs, low-rise style, stretch fabric and machine washable according to the product details.

Ideal for: Specific needs and intensive use
Reebok RBK Trunks Balen Black White Blue Slate M

Reebok RBK Trunks Balen Black/White/Blue Slate M

Why it suits this profile: According to the product description, this 3-pack is designed for everyday wear, sport and an active lifestyle. Its elasticated waistband and modern, sporty cut are designed to allow freedom of movement.

How this product avoids the pitfall

The product information specifically mentions a flexible waistband and suitability for physical activity. Check the material and size before ordering, as these details can vary between styles.

Key benefits and features

3-pack in three colours, flexible waistband and, according to the product description, suitable for everyday wear and active use.

Looking for more options?

We’ve put together a complete, up-to-date list of products that meet these strict selection criteria and the applicable European safety regulations.

Care tips to help your underwear last longer

How long men’s underwear lasts depends not only on the fabric, but also on how you wash it. Always follow the care label. For several of the styles discussed, this means:

  • Wash at the temperature stated on the label.
  • Don’t use bleach unless the care label allows it.
  • Avoid tumble drying if the label advises against it.
  • Iron at a low temperature if recommended.
  • After washing, check that the waistband still lies flat and the seams aren’t pulling.

A multipack is especially practical when you rotate several pairs of trunks. Each pair then needs washing less often.

Frequently asked questions about men’s trunks

What’s the difference between trunks and regular boxer shorts?

Trunks usually have shorter legs and a closer fit than loose boxer shorts. They have less fabric around the upper thigh, but generally sit closer to the body. For extra room, you can also browse men’s boxer shorts with a relaxed fit.

How do I choose the right size of men’s trunks?

Measure your waist where the waistband will sit and compare the measurement with the size guide for that specific brand. Also consider the fit: fitted, relaxed, low-rise or mid-rise. The size label alone isn’t enough, as measurements can vary between brands and styles.

How long do men’s trunks last?

It depends on the material, how often you wear them, your washing routine and the quality of the seams and elastic. Rotate several pairs, follow the care label and avoid unnecessarily high temperatures. Replace a pair when the waistband stays loose, the fabric becomes thin or the seams start to come undone.