Joybuy Insights

How to choose sports shorts without regretting your purchase: what to look for in size, material and fit

Choosing a new pair of sports shorts seems simple. Yet many shoppers fall into the same traps: shorts that slip down while you move, cotton that becomes too warm during an intense workout or a close fit that feels comfortable in the fitting room but restricts you on the move. If you’re looking for men’s sports shorts, women’s sports shorts or running shorts, it therefore pays to look beyond colour and the brand logo.

In this buying guide, the Joybuy Product Recommendation Officer sets out the key points to check. This helps you compare sports shorts based on features you’ll notice in real-world use.

Common pitfalls when choosing sports shorts

1. Looking only at the size letter

A size L isn’t the same in every model. Regular fit, loose fit and compression fit can vary considerably, even when the label shows the same size. So check the waist and hip measurements in centimetres and refer to the size chart for the specific product.

With sports shorts featuring an elasticated waistband, the drawstring is also important. An internal or external drawstring helps you adjust the fit, but it doesn’t replace choosing the right size.

2. Confusing cotton with sports fabric

Cotton shorts and fleece shorts feel soft and are suitable for warm-ups, wearing at home or relaxed days. During an intense workout, however, a cotton blend can feel different from a lightweight polyester-elastane blend. According to Under Armour’s product description, certain synthetic models are designed to wick away moisture and dry quickly. This is a brand claim about performance; treat it primarily as a product specification for comparison, rather than a guarantee for every user.

For running, fitness and intense training sessions, weight, ventilation and drying time are often more relevant than a soft inner surface.

3. Overlooking an integrated inner short

2-in-1 shorts combine a loose-fitting outer short with a close-fitting inner short. This can provide extra coverage and freedom of movement, but the combination won’t feel the same for everyone. Check whether the inner layer fits like compression shorts and whether the length suits how you plan to use them. For everyday wear, a standard pair of training shorts may be more comfortable.

Specifications you should check

Material and layering

Pay attention to the composition, for example:

  • Cotton with polyester: soft and suitable for casual shorts, warm-ups and relaxed wear.
  • French terry: According to the product description, the PUMA ESS No. 1 Logo shorts are made from 68% cotton and 32% polyester. The fabric has a smooth outer surface and a softer inner surface.
  • Polyester with elastane: a common combination for fitness shorts and compression shorts. Elastane provides stretch, while polyester generally feels lightweight.
  • 2-in-1 construction: according to the product information, the outer layer of the Under Armour Launch 7'' is made from 100% polyester, while the inner short is made from 90% polyester and 10% elastane.

Also look for mesh panels, a gusset and seams in areas where a lot of friction occurs. These details say more about practical use than general terms such as “performance” or “advanced”.

Fit and length

A 6-inch or 7-inch inside-leg length is available in various models. A shorter style can be comfortable for running or fitness, while a knee-length style offers more coverage for everyday wear.

Look out for these fits:

  • Regular fit: room around the thighs and hips, suitable for training and casual wear.
  • Loose fit: a roomier cut, such as the women’s Under Armour Rival Fleece Short.
  • Fitted: sits closer to the body, such as the Under Armour Launch 2-in-1.
  • Compression fit: very close-fitting. Under Armour’s product description recommends considering a size larger if you prefer a less restrictive fit or are between sizes.

Fit is personal. A close-fitting model isn’t automatically more functional for every athlete.

Storage and visibility

Side pockets are useful for keys, a phone or a card. Check whether a pocket can be closed securely and whether your phone stays stable while you move. According to the product description, the Under Armour Launch 2-in-1 has an internal phone pocket on the right-hand side. Reflective details can be useful in low-light conditions, but they don’t automatically make running shorts fully visible to other road users.

Our recommendations by user profile

Suitable for: Budget-conscious beginners
PUMA Men's Shorts Medium Gray Heather PUMA ESS No. 1 Logo Collection L

PUMA Men's Shorts Medium Gray Heather PUMA ESS No. 1 Logo Collection L

Why it suits this profile: These PUMA shorts are a suitable first pair for training, everyday wear and relaxing at home. The knee length and regular fit are easy to style.

How this product avoids the pitfall

The size chart lists several body measurements and the waistband has an internal drawstring. This allows you to fine-tune the fit more accurately than by relying on a size letter alone.

Main benefit & advantages

68% cotton and 32% polyester; French terry; side pockets; according to the product information, made with at least 50% recycled materials.

Suitable for: Shoppers looking for premium quality
Under Armour Men's Rival Fleece Shorts Grey Sportstyle Collection L

Under Armour Men's Rival Fleece Shorts Grey Sportstyle Collection L

Why it suits this profile: A practical choice for anyone mainly looking for comfort during warm-ups, gym sessions and relaxed days. The regular fit provides more room than a compression model.

How this product avoids the pitfall

The waistband is elasticated and has an external drawstring. The product information also mentions a press-stud pocket, so small items don’t have to be carried loose in an open pocket.

Main benefit & advantages

80% cotton and 20% polyester; brushed fleece inner; regular fit; hand pockets and a rear press-stud pocket.

Suitable for: Specific uses & intensive users
Under Armour Men's Launch 7'' 2-In-1 Shorts Black Sportstyle Collection XL

Under Armour Men's Launch 7'' 2-In-1 Shorts Black Sportstyle Collection XL

Why it suits this profile: These 2-in-1 shorts are suitable for running and intense training where extra coverage, ventilation and a phone pocket are useful.

How this product avoids the pitfall

The integrated inner short means you don’t have to rely solely on the loose outer layer. The size chart distinguishes between waist and hips; the fit is fitted, so it isn’t roomy.

Main benefit & advantages

Polyester outer short; inner short with elastane; mesh panels; internal phone pocket; reflective details.

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.

Care for a longer service life

Always follow the care label. For the Under Armour models mentioned, this includes washing cold with similar colours, not using bleach and tumble-drying at a low temperature. Don’t routinely wash sports shorts at high temperatures and don’t use fabric softener if the product information advises against it. This helps preserve the fit and material properties as effectively as possible.

After washing, check the elasticated waistband, seams and any reflective elements. Loose seams or stretched elastic are practical signs that it’s time to replace a pair of shorts, regardless of the brand.

Frequently asked questions about sports shorts

Which sports shorts are suitable for running?

Choose a lightweight model with a secure waistband, sufficient ventilation and a pocket that keeps your phone or key stable. 2-in-1 shorts can provide extra coverage. Also check that the inner short isn’t too tight and that the length suits your running style.

Are cotton shorts suitable for fitness?

It depends on the workout. Cotton blends are comfortable for warm-ups and light fitness. During intense sessions, a model made with polyester and elastane may feel more practical thanks to its lower weight and stretch. Always compare the exact material composition rather than relying on the product name alone.

How do I choose the right size of sports shorts?

Measure your waist around your natural waistline and your hips at their widest point. Compare both measurements with the product’s size chart. Then consider the fit: compression fit is very tight, fitted sits close to the body, while regular or loose fit offers more room.