Joybuy Insights

Buying clothes online: how to choose clothing that fits your size, style and needs

Buying clothes online is convenient, but a nice product photo doesn’t tell the whole story. Especially with men’s and women’s clothing, the fit, fabric and care instructions can vary considerably. A T-shirt that looks soft and drapey in the picture might actually be heavy or roomy. A coat that seems suitable for rain could be designed mainly for light outdoor activities.

With these practical checks, you can compare clothing more effectively and avoid a purchase you’ll regret.

Common pitfalls when buying clothes online

1. The size on the label doesn’t tell you everything

A size L isn’t the same across every brand. A regular fit, slim fit and oversized T-shirt can all be labelled size L but fit very differently. So don’t just look at the letter size. Also check the chest, waist, hip and sleeve measurements in centimetres.

Also pay attention to the difference between:

  • True to size: according to the product information, this usually fits your normal size.
  • Slim fit: cut closer to the body with less room around the chest and waist.
  • Relaxed fit: slightly roomier, without the exaggerated width of oversized clothing.
  • Oversized fit: deliberately loose and cut longer or wider.

2. Marketing language doesn’t replace fabric information

Terms like “premium”, “technical” or “sustainable” are hard to judge without specifics. Check the fibre percentage, the fabric weight and the washing instructions. A cotton garment might feel soft, while polyester dries faster and often creases less.

Even with sustainable clothing, the details matter. If a product contains recycled polyester or regenerative cotton, check what percentage is stated. A general claim about sustainability doesn’t automatically tell you about the full composition or lifespan.

3. Care requirements are often underestimated

A garment that can only be washed gently at a low temperature needs more attention than one that can be washed at 40 °C. T-shirts with prints, jackets with a water-repellent finish and underwear with elastane can lose their shape more quickly if dried incorrectly.

So before you buy, check:

  • maximum washing temperature;
  • whether it can go in the tumble dryer;
  • ironing and bleaching instructions;
  • recommended detergent;
  • any instructions for restoring a finish.

Three important specifications to compare

Fit and measurements

Use a tape measure and compare your body measurements with the size chart on the product page. With a coat, you’ll need extra room for a sweatshirt or jumper. With underwear, waist and hip measurements matter more than just the ready-to-wear size.

An oversized T-shirt is deliberately roomy according to the product information. If you want a less wide look, going down a size might make sense, but always check the exact measurements.

Fabric and fabric weight

100% cotton is often chosen for everyday comfort and breathability. A higher fabric weight, such as 180 or 240 g/m², indicates a heavier jersey. That can give structure but also feel warmer.

Polyester is practical for sportswear. According to Nike’s product information, the Park 20 Tee features Dri-FIT technology designed to wick moisture away from the skin. The product specifications for this model state a composition of 57% cotton and 43% polyester. Check the current product page if the fabric choice is a deciding factor.

For underwear, elastane usually provides stretch. The Calvin Klein bikini briefs in this selection, for example, state 90% cotton and 10% elastane for the 3-pack. The composition of individual models may vary.

Intended use

Don’t choose based on brand or colour alone, but primarily on how you’ll use it:

  • Everyday and casual: T-shirts, blouses, cardigans and sweatshirts in easy-care fabrics.
  • Sport and football: lightweight sportswear with room to move and a fabric that, according to the product information, can help wick away moisture.
  • Rain and outdoor use: coats with a described membrane, hood, sealable pockets and suitable care instructions.
  • Work or formal occasions: a trench coat or blouse with a fit that allows for layering.
  • Under a tight outfit: thongs or smoothly finished underwear in the right size.

Recommended clothing by buyer type

Suitable for: Budget-conscious beginners
Heavy Oversized Tee White M

Heavy Oversized Tee White M

Why this fits the profile: This T-shirt is a straightforward choice for anyone looking for a roomy casual fit. According to the product information, the size range runs from S to 5XL.

How this product avoids the pitfall

The description states a clear composition of 100% cotton, a weight of 180 g/m² and specific chest and length measurements.

Key benefit & highlights

100% cotton, oversized fit and sizes up to 5XL. Machine wash at 30 °C is stated.

Suitable for: Shoppers seeking top quality
Tommy Hilfiger Heritage Single Breasted Trench Women Midnight S

Tommy Hilfiger Heritage Single Breasted Trench Women Midnight S

Why this fits the profile: A trench coat is ideal for anyone wanting one coat for everyday outfits, work and occasions where a polished look is required.

How this product avoids the pitfall

The product page includes a size guide with chest, waist, hip and sleeve measurements. The composition is stated as 100% cotton; check the current size chart before purchasing.

Key benefit & highlights

Midnight colour, single-breasted design and a style that can be worn both casually and formally.

Suitable for: Specific use & intensive users
Nike Dri-Fit Park 20 Tee CW6952-071 L

Nike Dri-Fit Park 20 Tee CW6952-071 L

Why this fits the profile: This Nike sports top is designed for football and exercise, but according to the product description it also has a classic round neck for casual wear.

How this product avoids the pitfall

The product information states a regular fit, short sleeves, size L and machine wash. Check the fabric details on the product page as there may be differences between the description and the specification table.

Key benefit & highlights

Regular fit, dark grey colour and Dri-FIT technology as described by Nike in the product information.

Suitable for: Practical everyday basics
Calvin Klein 3 Pack Bikini Briefs Icon Logo

Calvin Klein 3 Pack Bikini Briefs - Icon Logo

Why this fits the profile: A 3-pack is practical for anyone wanting to buy several everyday basics without mixing and matching individual styles.

How this product avoids the pitfall

The product information includes a size chart, a fully lined gusset and a composition of 90% cotton and 10% elastane.

Key benefit & highlights

Three colours in one set, stretch cotton and a logo waistband. Check the available size before ordering.

Looking for more options?

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

Frequently asked questions about buying clothes online

How do I determine my clothing size online?

Measure your chest, waist and hips at the widest point and compare these measurements with the size chart for the specific product. Don’t automatically use the same size for a blouse, coat and underwear. With coats, allow room for an extra layer.

Which fabric is best for comfortable clothing?

That depends on how you’ll use it. Cotton feels pleasant for many people in everyday wear. Polyester can be practical for sportswear because of the properties mentioned in the product description. A mix with elastane offers more stretch. Always check the exact composition and washing instructions.

How can I stop clothes bought online from losing their shape quickly?

Wash according to the label, don’t use bleach if it’s not allowed, and limit tumble drying when the instructions advise against it. Turn clothing with a print inside out and close zips before washing. This reduces unnecessary friction and heat during care.