Joybuy Insights

Choosing trainers and sports shoes: a practical guide to comfort, fit and use

Trainers and sports shoes often look very similar online. However, the difference between a suitable shoe and an unsuitable purchase can be significant. A casual trainer for everyday wear is not automatically suitable for running. A thick sole also says little about the fit or grip.

So watch out for these common pitfalls:

  • Marketing language without clear specifications: words such as “extra comfort” or “sporty” do not tell you whether the shoe is suitable for your activity.
  • Choosing the wrong size: an EU size can fit differently depending on the brand or model. Relying solely on your usual size can therefore cause problems.
  • Buying a shoe for the wrong purpose: retro trainers and casual trainers are designed for everyday use, whereas running shoes need different features. For muddy paths, trail-running shoes or walking boots make more sense.
  • Forgetting about care: textile, leather, synthetic materials and GORE-TEX do not all require the same treatment. Cleaning them incorrectly can shorten their lifespan.

Which specifications should you check?

1. Fit, size and width

As well as the EU size, check the foot length in centimetres where this information is available. For example, the adidas Run 70s 2.0 links EU 40 to a foot length of 25.5 cm. The product information also states that it has a regular fit.

Pay attention to the shoe width too. Width D is common across many models, but that does not automatically mean that every foot will feel the same in them. If you have a high instep, a wide forefoot or a narrow heel, look at the fastening and the shape of the toe box.

  • Laces: precisely adjustable and useful for walking or sports.
  • Slip-ons: quick to put on, but less flexible to adjust.
  • Hook-and-loop fastening and elastic: practical for children’s trainers and independent dressing.
  • Quicklace: on some trail models, this can be tightened quickly without traditional laces.

2. Sole, cushioning and grip

A sports shoe consists of several components. The midsole affects how the shoe feels when you walk, while the outsole makes contact with the ground.

For everyday use, a flexible rubber outsole and lightly cushioned construction can be comfortable. According to the product information, running shoes such as the adidas Galaxy 7 use a Cloudfoam midsole and a TPU outsole. These are verifiable material specifications, but they will not provide the same level of comfort for every runner.

For trail-running shoes, tread, stability and grip are more important than simply having a soft sole. According to the product description, the Salomon XA Pro 3D v9 GTX has a Contagrip rubber outsole and a 3D Advanced Chassis. The product information also mentions a GORE-TEX membrane for protection against wet weather. Treat this as a product specification, not a guarantee that your feet will stay dry in all conditions.

3. Upper material and care

  • Textile and mesh: often lightweight and breathable, but more sensitive to rain and dirt.
  • Synthetic leather: easy to wipe clean and suitable for everyday use.
  • Leather: can feel sturdy, but requires appropriate care.
  • GORE-TEX: the product information for the Salomon XA Pro 3D v9 GTX states that it has a waterproof membrane. Follow the manufacturer’s care instructions to preserve its properties as effectively as possible.

Do not simply put shoes in the washing machine. The adidas models in this selection recommend cleaning them with a damp cloth and leaving them to air-dry. Skechers recommends cleaning various models with a damp cloth and mild soap. Always check the instructions on the product page.

Recommended models by user profile

Suitable for: Budget-conscious beginners
Adidas Run 70s 2.0 FTWWHT/CBLACK/GREONEIH8584 40

Adidas Run 70s 2.0 FTWWHT/CBLACK/GREONEIH8584 40

Why it suits this profile: A retro trainer for everyday use, commuting and leisure. The regular fit and size information including foot length make comparison easier.

How this product avoids the pitfall

The product information specifies the materials, a flexible rubber sole and a regular fit, rather than making only general comfort claims.

Key benefit & advantages

Textile lining, synthetic leather upper and a lightweight rubber outsole.

Suitable for: Shoppers looking for premium quality
New Balance U574RUS39.5

New Balance U574RUS39.5

Why it suits this profile: A retro trainer for anyone looking to combine their choice of materials, everyday wearability and a distinctive silhouette.

How this product avoids the pitfall

The specifications mention suede, mesh, a rubber outsole and a supportive midsole. This lets you compare the model based on its materials.

Key benefit & advantages

A combination of suede and breathable mesh; rubber sole with grip for everyday use.

Suitable for: Specific activities & intensive users
Salomon XA Pro 3D v9 GTX

Salomon XA Pro 3D v9 GTX

Why it suits this profile: Designed for trail running, walking and varied surfaces. Its construction is more specialised than that of regular casual trainers.

How this product avoids the pitfall

The product description specifies GORE-TEX, Contagrip, 3D Advanced Chassis and Quicklace. This makes it clearer what the model is designed for.

Key benefit & advantages

GORE-TEX membrane according to the product specification; Contagrip rubber lugged sole and quick fastening.

Suitable for: Parents looking for children’s shoes
Skechers Gametronix 402260L BLMT 29

Skechers Gametronix 402260L BLMT 29

Why it suits this profile: A children’s trainer for school, play and everyday use. The fastening is practical when a child wants to put their shoes on independently.

How this product avoids the pitfall

Size 29, regular fit and shoe width D are clearly stated. The hook-and-loop fastening avoids the hassle of loose laces.

Key benefit & advantages

Synthetic leather upper, rubber sole and hook-and-loop fastening; the product information states that it has a regular fit.

Looking for more options?

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

Frequently asked questions about trainers and sports shoes

How long do trainers typically last?

Their lifespan depends on use, the surface, body weight, materials and maintenance. Casual trainers worn every day wear differently from shoes used only indoors. Look out for a smooth, worn outsole, coming-away seams or compressed cushioning. These are practical signs that it is time to replace a pair.

Are running shoes suitable for walking?

They can be suitable for short, gentle walks, but it depends on the model. Running shoes are usually lightweight and designed for a specific running surface. For long walks, wet paths or uneven terrain, walking boots or trail-running shoes may offer more suitable features, such as a pronounced tread and extra stability.

How do I choose trainers in size 42?

Measure both feet at the end of the day and compare the longer foot with the size chart for the specific model. As well as EU 42, check the foot length in millimetres or centimetres. On some models, such as the adidas Galaxy 7, EU 42 corresponds to a foot length of 27 cm. Also allow room for socks and space around the toes.