Joybuy Insights

Buying shoes online: how to choose the right size, fit and sole

Buying shoes online is easy, but a beautiful product photo does not tell you everything. A sole may look sturdy yet offer little grip. A shoe may be described as “comfortable” but still come up too narrow. And a water-repellent model is not automatically suitable for prolonged rain.

These practical checks will help you avoid unsuitable purchases. You’ll learn what to look for when buying men’s shoes, women’s shoes, trainers, sports shoes, walking shoes and everyday footwear.

Three common pitfalls when buying shoes online

1. Relying solely on the EU size number

An EU size is not identical across every brand or model. The shape of the last can also vary. A size 44 shoe may feel roomier in one model than another.

So always check:

  • the foot length in millimetres or centimetres;
  • the stated width, such as slim, standard or wide;
  • whether the size guide shows the insole length or foot length;
  • whether there is enough room around the toes.

With running shoes and trail running shoes, going up half a size can be more comfortable when you wear thicker socks. With leather boots and winter boots, the combination of foot length, instep height and sock thickness is particularly important.

2. Confusing marketing terms with product specifications

Words such as “performance”, “all-terrain” or “waterproof” are of limited use without technical details. Instead, look for verifiable features:

  • upper: leather, nubuck, mesh, textile or synthetic material;
  • midsole: for example, EVA foam for cushioning and responsiveness;
  • outsole: rubber, tread pattern and intended surface type;
  • fastening: laces, hook-and-loop or a slip-on design;
  • lining: relevant for warmth, ventilation and wearing comfort.

According to the product description for the Nike Manoa, the upper is made from nubuck leather and the model has a water-repellent construction. That is not the same as a guarantee that the shoe will remain waterproof for prolonged periods. In wet weather, also check the seams, tongue construction and care instructions.

3. Choosing a sole that does not suit the intended use

A flat rubber sole may be suitable for the city, but it is not automatically suitable for mud or wet woodland ground. FG studs, for example, are designed for firm natural grass pitches. They are not the obvious choice for everyday use on tarmac.

For different situations:

  • trainers: consider flexibility, tread and walking comfort;
  • running shoes: check cushioning, fit and surface suitability;
  • trail running shoes: look for a more aggressive rubber tread and protection against stones;
  • walking shoes: consider heel stability, grip and shock absorption;
  • sports shoes: choose a sole suited to the sport in question;
  • football boots: check the stud pattern and pitch type;
  • basketball shoes: look at ankle support, lateral stability and court grip;
  • sliders and Crocs clogs: check the fit and whether the sole stays securely in place.

The most important specifications for making a safe choice

Fit and size

Measure both feet at the end of the day, as feet are often slightly larger then. Place your heel against a wall and measure to the longest toe. Then use the product’s size guide rather than relying solely on your usual size.

Pay attention to the difference between:

  • standard fit: designed for most foot shapes;
  • slim fit: narrower around the foot;
  • roomier toe box: more space around the forefoot;
  • flat fit: limited height around the instep.

A shoe should fit securely around the heel without pinching. Your toes should be able to move and should not touch the front when walking.

Material and care

Leather, nubuck and textile each have different properties. Leather shoes can mould to your feet, but they require care and should not simply be put in the washing machine. Mesh generally offers better breathability, but it can be more susceptible to rain and dirt.

Always follow the care label. The supplied product information states that several models should be cleaned by hand with a damp cloth or mild soap. Direct heat, a tumble dryer and harsh cleaning products can damage the materials and adhesive bonds.

Sole, grip and activity

A rubber outsole provides a reliable basis for durability and grip, but its actual performance depends on the tread, surface and level of wear. The PELLIOT models are described as having a ROCKYTEC rubber sole; according to the product description, some variants feature Vibram Megagrip. So check exactly which version you are ordering.

These details are also relevant for intensive use:

  • a reinforced upper to protect against scuffing;
  • a properly adjusted lace fastening;
  • enough room for sports socks;
  • a midsole that is not already visibly deformed;
  • a tread suited to grass, tarmac, rocks or indoor floors.

Recommended shoes for different user profiles

Suitable for: Budget-conscious beginners
US POLO ASSN MEN'S TRAINERS ARIS001M/6YM1 WHITE-DARK BLUE 44

US POLO ASSN MEN'S TRAINERS ARIS001M/6YM1 WHITE-DARK BLUE 44

Why it suits this profile: A simple model for everyday use, commuting and casual outfits. The product information states that it has a standard width, lace fastening, lightly padded insole and rubber sole.

How this product avoids the pitfall

The basic features are clearly stated. The model is not described as water-resistant, so you won’t accidentally treat it as a rain shoe.

Key benefit & advantages

Standard fit, lace fastening and rubber sole; suitable for a straightforward everyday footwear choice.

Suitable for: Buyers seeking premium quality
Geox Men's U Spherica Ec3 A Collection – Nappa Black 45

Geox Men's U Spherica Ec3 A Collection – Nappa Black 45

Why it suits this profile: For anyone looking for a smart leather shoe with extra attention to materials and everyday comfort. The product description mentions full-grain leather, textile panels and a Spherica cushioning system.

How this product avoids the pitfall

The material and composition are specified. The perforated sole mentioned is not a reason to regard the model as fully waterproof.

Key benefit & advantages

Full-grain leather upper, textile lining and stated Spherica cushioning; designed for everyday use.

Suitable for: Specific uses & intensive users
PELLIOT Running Shoes Unisex Breathable Lightweight Obsidian Black EU 42

PELLIOT Running Shoes Unisex – Breathable & Lightweight, Obsidian Black (EU 42)

Why it suits this profile: For runners and outdoor enthusiasts who alternate between tarmac, park paths and unpaved routes. According to the product description, the model has a mesh upper, EVA midsole and ROCKYTEC rubber outsole.

How this product avoids the pitfall

The product information distinguishes between standard and slim fit. Also check which sole variant you will receive, as the description states that Vibram Megagrip is only available on certain versions.

Key benefit & advantages

Lightweight mesh, EVA foam and a rubber sole with a grippy tread; the size guide lists foot lengths from 245 to 275 mm.

Looking for more options?

We’ve 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 buying shoes online

How do I determine my shoe size when ordering online?

Measure your foot in millimetres and compare the measurement with the size guide for the model you’ve chosen. Measure both feet and use the longer measurement. Also check the fit: a standard model is not the same as a slim-fit model. With sports shoes, you may need extra room for thicker socks.

How long do shoes bought online last?

Their lifespan depends on the material, usage, body weight, surface and level of care. A pair worn every day on tarmac will wear differently from one used only indoors. Alternate between shoes, allow damp footwear to dry at room temperature and follow the care advice. When buying, also check your statutory conformity rights; for certain products within the EU, a minimum two-year legal guarantee applies, although the precise application depends on the circumstances.

Are more expensive shoes automatically more comfortable?

No. Comfort mainly depends on fit, the last, the sole construction and how you intend to use the shoe. A leather boot may be suitable for the office and city use, while a lightweight running shoe may be better for long distances. Compare the objective specifications and choose different sizes or versions where your foot shape requires it.