Joybuy Insights

Buying trousers online: how to choose the right pair for you

Buying trousers online sounds simple until you have to choose between women’s trousers, men’s trousers, jogging bottoms, leggings, work trousers and sporty styles. A photo tells you little about the waistband, leg length or fabric. A low price doesn’t automatically mean they’ll be comfortable or long-lasting either.

Use this practical guide to start with how you’ll wear them, then check the size and material. That way, you’re less likely to end up with trousers that fit differently after a few washes, restrict your movement or aren’t suitable for the activity you bought them for.

Common pitfalls when buying trousers online

1. Relying on the size letter alone

An M or XL isn’t a standard size. Every manufacturer uses its own sizing guide. Some styles list the waist measurement in centimetres, while others use EU, UK or international sizing. So measure your waist and, where relevant, your hips and inside leg. Then compare your measurements with the product page.

For children’s trousers, age is only a guide. According to the product information, the Chicco leggings in size 104 are intended for children aged around 4 and list a waist measurement of 55 cm and a hip measurement of 62 cm, among other details. Always check the exact size chart before ordering.

2. Mistaking marketing language for specific information

Words such as “premium”, “performance” or “maximum comfort” can’t be verified on their own. Instead, look for details such as fabric composition, waistband type, pockets, fastening and fit.

Jogging bottoms made from 70% cotton and 30% polyester have a different fabric composition from track bottoms made from 100% polyester. Both can be practical, but for different situations. The product description and care label are your best guides; a brand’s claim about comfort or performance isn’t a guarantee for every wearer.

3. Choosing trousers without considering how you’ll use them

Soft jogging bottoms are handy for relaxing at home and in your free time, but they’re not always suitable for work that involves a lot of kneeling. Leggings can offer freedom of movement, but may not have pockets. Protective motorcycle trousers with hard armour also need to fit properly, and you should check that the protectors are correctly positioned.

So first decide what you need them for: everyday wear, sport, work, cycling, motorcycling or active children.

Specifications worth checking carefully

Fit and sizing

Pay attention to the combination of waist size, leg length and style. Slim fit sits differently from regular fit or wide-leg styles. An elasticated waistband with a drawstring gives you more room to adjust the fit, while a fixed waistband depends more on the stated size.

For men’s trousers and work trousers, sizing such as 32/32 or 32/34 matters: the first number usually refers to the waist and the second to the leg length. For international sizes, always check the chart for the specific product.

Material and care

The fabric helps determine how trousers feel and how you should care for them.

  • Cotton blends are often used for casual trousers and jogging bottoms. Check the washing and drying instructions to help prevent shrinkage or loss of shape.
  • Polyester is common in track bottoms, track pants and sports trousers. The material is lightweight and product information often highlights how easy it is to care for.
  • Elastane and other stretch fibres can help you move more freely. Check the stated percentage and recommended washing temperature.
  • The composition is especially important for leggings. The Skechers Go Walk leggings list nylon and 88% elastane in the product information.

Wash dark clothes according to the care label, and don’t use products on technical fabrics unless they’re recommended. Instructions can vary from one style to another.

Practical details

Before you buy, check that the trousers have the features you need:

  • side pockets, zipped pockets or a phone pocket;
  • knee pockets or reinforced sections on work trousers;
  • ribbed cuffs on jogging bottoms;
  • a drawstring or elasticated waist;
  • straight, tapered or wide legs;
  • enough room for work boots or protective equipment.

For motorcycle and protective trousers, also check which parts of the body are covered, how the protectors are secured and whether the trousers are designed to be worn under or over motorcycle clothing. The word “protective” doesn’t replace checking the product documentation or relevant safety information.

Our recommendations for different types of wearer

Suitable for: Budget-conscious beginners
Adidas Trefoil Essentials Pants IY7361 Black S

Adidas Trefoil Essentials Pants IY7361 Black S

Why it suits this profile: Black trousers with a familiar fit for casual wear, at home or on the go. The product information lists size S, a waist range of 76–81 cm and an elasticated waistband with a drawstring.

How this product avoids the pitfall

The size is linked to a specific waist measurement range, so you don’t have to rely on the letter size alone.

Key benefit & features

70% cotton and 30% recycled polyester; side pockets, ribbed cuffs and an adjustable drawstring.

Suitable for: Shoppers looking for top quality
CAT Nexus Knee Pocket Stretch Trouser Black Size 32/32

CAT Nexus Knee Pocket Stretch Trouser Black Size 32/32

Why it suits this profile: These men’s trousers are designed for work, combining ripstop fabric with Cordura reinforcements, knee pockets and several tool pockets.

How this product avoids the pitfall

They’re clearly designed for a specific purpose. You won’t end up with general casual trousers when pockets, ease of movement at the knees and reinforcement matter.

Key benefit & features

50% cotton, 48% polyester and 2% elastane; knee pockets, phone pocket, cargo pocket and hammer loop.

Suitable for: Specialist use & intensive wear
Unisex Motorcycle Protective Pants with Armor Pads

Unisex Motorcycle Protective Pants with Armor Pads, XXXL

Why it suits this profile: For motorcyclists and outdoor enthusiasts looking for protective motorcycle trousers with hard sections around the hips, thighs and knees. This unisex style is listed in size XXXL.

How this product avoids the pitfall

The product information specifies the protective zones and instructions for securing the protectors. Check for yourself that the fit and protection are right for how you’ll use them.

Key benefit & features

PP hard shells, EVA foam and breathable mesh according to the product description; removable protectors for hand washing.

Looking for more options?

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

Frequently asked questions about buying trousers online

How do I work out my trouser size when ordering online?

Measure your waist where you’d normally wear the trousers and compare it with the size chart on the product page. For full-length trousers, measure your inside leg too. For women’s trousers, men’s trousers and children’s leggings, don’t rely on S, M or L alone, as sizes can vary between brands and styles.

Which trousers are comfortable for everyday wear?

Jogging bottoms, soft sweatpants, leggings and casual chinos are popular choices for everyday wear. Check the waistband, fabric composition and pockets. A style with a drawstring is handy if you want more room to adjust the fit. For a smarter look, black trousers or chinos may be more practical than track bottoms.

How can I make my trousers last longer?

Follow the care label, wash dark colours separately and avoid bleach unless the label says it’s suitable. Don’t use unnecessarily high temperatures on stretch fabrics. Work trousers and protective trousers also need regular checks of the seams, pockets and protectors. This helps you spot when a part needs replacing.