Joybuy Insights

Buying clothes online: how to choose women’s clothing, men’s clothing and sportswear without making a mistake

Buying clothes online is convenient, but a nice product photo doesn’t always tell you enough. The fit can turn out differently, a fabric may be warmer or thinner than expected, and size charts vary from brand to brand. With a few simple checks, you can avoid a pair of trousers sitting unworn in your wardrobe or a jacket not being suitable for the British weather.

Common pitfalls when buying clothes online

1. Confusing a well-known brand name with the right fit

Nike sportswear, adidas clothing and Calvin Klein underwear each have their own models and sizing. A size L from one brand doesn’t necessarily fit the same as a size L from another. So don’t just focus on the brand – also pay attention to:

  • The stated body or garment measurements.
  • The fit, such as slim fit, regular fit or oversized.
  • The waist, hip or chest circumference in centimetres.
  • The description of the model and how it is intended to be worn.

2. Only looking at the fabric composition

A high cotton percentage doesn’t automatically mean a garment is thick, soft or breathable. The weave, lining and finish also affect how it performs. A fleece sweatshirt, for example, is great for extra warmth, while a lightweight T-shirt can be more practical when you’re on the move.

Also check the care instructions. A garment that can only be hand-washed requires more attention than underwear that can go in the washing machine.

3. Treating a product photo as proof of functionality

Features like moisture management, water repellency or insulation should be found in the product specifications. Brand descriptions are not an independent guarantee of a particular performance. According to Nike’s own information, Dri-FIT models are designed for moisture control; always check the composition, fit and care instructions for the specific product.

With jackets too, the difference between a lightweight jacket and a technical outer layer is significant. Look at zips, cuffs, hood, ventilation and lining rather than just the appearance.

Three parameters to check before you buy

1. Size and fit

Measure yourself at home with a flexible tape measure and compare your measurements with the product page. For trousers, waist and hip measurements are important; for jackets and sweatshirts, chest width and sleeve length come into play.

Look out for terms like:

  • Slim fit: fits closer to the body.
  • Regular fit: a more standard fit with room to move.
  • Oversized or relaxed fit: a looser cut, often with broader shoulders.
  • Mid-rise: a waist height between low and high.

If you’re looking for clothing in larger sizes, it’s worth checking the size chart for each model. A numeric size alone isn’t enough without the corresponding measurements.

2. Material and when you’ll wear it

For everyday use, a cotton blend can feel comfortable. Elastane often adds extra stretch, while polyester can help with shape retention and easy care. According to the product information, the Urban Classics boxer shorts are made from 95% organic cotton and 5% elastane. That gives a clear indication of the stretch, but how it feels on your skin is still personal.

For sportswear, pay attention to weight, ventilation and freedom of movement. For sweatpants and hoodies, an elasticated waistband, cuffs and pockets are practical details. For underwear, a soft waistband, a good leg opening and the right size matter more than just the logo.

3. Care and running costs

The overall value of clothing also depends on washing and drying. Check:

  • The maximum washing temperature.
  • Whether tumble drying is allowed.
  • Whether bleach or dry cleaning is advised against.
  • Whether dark colours need to be washed separately.
  • Whether the garment should be dried flat, hung or air-dried.

According to the product information, the adidas Trefoil Essentials Pants are made from 70% cotton and 30% recycled polyester. The recommended care is to wash on a cold, gentle cycle and not to tumble dry. That’s useful information if you wash sportswear or casual clothing frequently.

Recommended choices by user type

Suitable for: Budget-conscious beginners
Calvin Klein 3 Pack Bikini Briefs Icon Logo Black Grey White 3XL

Calvin Klein - 3 Pack Bikini Briefs - Icon Logo - Black, Grey, White 3XL

Why this fits the profile: A set of three basic pieces is practical for everyday use and makes size and material comparison straightforward.

How this product avoids the pitfall

The product information states a size range, a fully lined gusset and a flexible logo elastic. Do check whether 3XL matches your own measurements.

Key benefit & highlights

Three colours, 90% cotton and 10% elastane according to the product data, plus machine washable.

Suitable for: Shoppers looking for top quality
THE North Face Men Jackets NF0A84FC Estate Blue TNF Black M

THE North Face Men Jackets NF0A84FC Estate Blue/TNF Black M

Why this fits the profile: Ideal for anyone looking for a single jacket that can be adapted to changing outdoor conditions.

How this product avoids the pitfall

The 3-in-1 construction means the layers can be worn separately or together. Check before purchase whether you need the technical details and sizing.

Key benefit & highlights

Outer shell and down jacket in one system, adjustable hood, underarm zips and multiple pockets.

Suitable for: Specific use & intensive users
Adidas Trefoil Essentials Pants IY7361 Black XL

Adidas Trefoil Essentials Pants IY7361 Black XL

Why this fits the profile: A practical choice for leisure, travel and light daily activity where comfort is key.

How this product avoids the pitfall

The elasticated waistband with drawcord is adjustable. The slim fit does require checking the waist measurement; for XL, 91–96 cm is stated.

Key benefit & highlights

Soft fleece, side pockets, ribbed cuffs and a cotton blend with 30% recycled polyester according to the product information.

Looking for more options?

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

Compare more clothing by use

If you’re looking for women’s clothing, you might consider a trench coat, chinos or a Sherpa jacket. For men, T-shirts, sweatpants, boxers and jackets are easy to compare by material and fit. A Calvin Klein bikini or 3-pack underwear is especially suitable when you pay attention to waist and hip measurements. For sport, a Nike T-shirt or hoodie are relevant options, but always check the exact product composition: product information can vary by model.

With a bodysuit, such as the Feelingirl Lace V Neck Full Thong, adjustable straps, the fastening and care are especially important. The product description mentions a nylon-elastane outer layer, a V-neck and a fastening with eleven poppers. Because hand washing is recommended, this model is best suited to shoppers who are willing to care for the garment carefully.

Frequently asked questions about buying clothes online

How do I determine my clothing size when buying online?

Measure your waist, chest or hips depending on the garment and compare these values with the size chart on the product page. Also look at the fit. A slim fit model can feel different from a regular fit in the same size.

Which materials are suitable for everyday use?

Cotton feels comfortable for many people in T-shirts and underwear. A cotton blend with elastane can offer more freedom of movement. Polyester is often used in sportswear and fleece, but the wearing comfort depends on the construction and ventilation. Use the fibre composition as a guide and also read the care information.

How can I prevent clothes bought online from wearing out quickly?

Wash according to the label, don’t use bleach when it’s advised against, and choose a lower temperature if possible. Air-dry clothing when tumble drying isn’t allowed. When buying, also check the seams, elastic parts, zips and the intended use situation.