Joybuy Insights

Choosing an Under Armour sports shirt: a practical guide for training and everyday wear

An Under Armour sports shirt may seem like a straightforward purchase at first glance. However, small differences in material, fit and care can determine whether you wear it mainly for sport or eventually leave it in the wardrobe. This applies to an Under Armour men's T-shirt, an Under Armour women's T-shirt, a longsleeve or a fleece top.

Joybuy Product Recommendation Officer therefore looks beyond empty marketing claims and focuses on verifiable product information. This helps you avoid paying too much for a shirt that does not suit your training, body shape or intended use.

Three common pitfalls when choosing sports shirts

1. “Breathable” does not automatically mean fully technical fabric

A breathable sports shirt can be made from different fibres. A cotton blend often feels soft for everyday wear, but has different properties from a lightweight shirt made entirely from synthetic fibres. Always check the composition.

According to the product information, the Under Armour Sportstyle shirts in this selection consist of 60% cotton and 40% polyester. This gives them a softer feel than many smooth training fabrics. At the same time, the product description refers to moisture transport and quick-drying performance. Your experience will ultimately depend on factors including intensity, temperature and fit.

2. The wrong size makes technical features less useful

A training shirt that is too tight can restrict movement. A shirt that is too loose may shift uncomfortably while running or exercising, and may feel less comfortable under a gilet. Do not just look at S, M or L. Compare your chest or waist measurement with the size chart for the specific model.

For example, the stated chest measurements for the men's models range from 86–94 cm for S to 122–132 cm for XXL. For size L, the white longsleeve model lists a chest measurement of 104–112 cm. For women's models, a waist measurement is also provided alongside the chest measurement. Ideally, measure with a flexible tape measure without pulling it tight.

3. Sports shirts are sometimes cared for incorrectly

A quick-drying sports shirt can lose its shape or feel if it is washed at too high a temperature or treated with fabric softener. Always follow the label and product instructions.

The following care advice is given for the Under Armour models mentioned:

  • Wash cold and preferably inside out.
  • Wash with similar colours.
  • Do not use fabric softener.
  • Use only non-chlorine bleach if necessary.
  • Tumble dry at a low temperature.
  • Do not iron or dry-clean.

Also avoid prolonged exposure to direct sunlight when caring for the white longsleeve model, as this may affect discolouration according to the product information.

Which specifications matter?

Material: cotton blend or fleece

A cotton sports shirt is often suitable for light training, warm-ups, travelling and everyday wear. Cotton's soft hand feel can be pleasant when you wear a shirt all day. For very intense workouts, a smoother synthetic shirt may be more practical, depending on your personal preference.

An Under Armour fleece top is designed for cooler conditions. According to the product information, the Armour Fleece model in this selection consists of 100% polyester. It has a soft inner layer and a quarter zip. The manufacturer describes the fabric as lightweight, breathable and stretchy. According to Under Armour's own information, the main fabric contains at least 90% recycled polyester, excluding trims and decorations.

Sleeve length and layering

A short-sleeved T-shirt is suitable for fitness, indoor training and warm days. An Under Armour longsleeve provides more coverage during a warm-up, an outdoor walk or when worn as a layer under a jacket. A quarter zip fleece is particularly useful when you want to adjust ventilation or your layers quickly, thanks to the zip at the neck.

For yoga or a workout in a warm studio, a women's workout tank top can provide greater freedom of movement around the shoulders. For these types of models, be sure to check the available product details, such as the size chart, material and care instructions.

Fit and purpose

According to the product information, the Under Armour Sportstyle models have a regular fit. This is a practical middle ground for training and casual wear. If you are looking for a closer silhouette, you can also browse muscle fit clothing, but take extra care to ensure there is enough room for movement around the chest, shoulders and underarms.

Recommended choices for different user profiles

Suitable for: Budget-conscious beginners
Under Armour Men's T-Shirt Short Sleeve Black Sportstyle Collection M

Under Armour Men's T-Shirt Short Sleeve Black Sportstyle Collection M

Why it suits this profile: A versatile black Under Armour men's T-shirt for fitness, light training and everyday wear. The regular fit is easy to pair with sports trousers or jeans.

How this product avoids the pitfall

The composition of 60% cotton and 40% polyester is clearly stated. The available sizes and chest measurements are also provided, so you do not have to rely on the letter size alone.

Main benefit & highlights

Cotton blend, ribbed collar, regular fit and, according to Under Armour, quick-drying moisture-wicking technology.

Suitable for: Shoppers seeking premium quality
Under Armour Women's T-Shirt Short Sleeve Black Sportstyle Collection XS 2

Under Armour Women's T-Shirt Short Sleeve Black Sportstyle Collection XS 2

Why it suits this profile: A black Under Armour women's T-shirt for anyone looking for one shirt that works for training, fitness and casual outfits.

How this product avoids the pitfall

The product information lists a regular fit and specific chest and waist measurements from XS to XL. This allows you to match the fit more accurately to your own measurements.

Main benefit & highlights

60% cotton and 40% polyester, lightweight construction, ribbed collar and, according to Under Armour, quick-drying properties.

Suitable for: Specific uses & intensive users
Under Armour Men’s Fleece 1/4 Zip Grey Armour Fleece Collection XL

Under Armour Men’s Fleece 1/4 Zip Grey Armour Fleece Collection XL

Why it suits this profile: Suitable for outdoor training, warm-ups and layering on colder days. The quarter zip makes it easy to adjust while moving.

How this product avoids the pitfall

This is not a lightweight T-shirt being used as a warm layer. The product description mentions a soft inner layer, a stand collar and a quarter zip for layering.

Main benefit & highlights

100% polyester, regular fit, quarter zip and, according to Under Armour, a lightweight, stretchy Armour Fleece fabric.

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 Under Armour sports shirts

Is an Under Armour sports shirt suitable for running?

That depends on the model and the conditions. Short sleeves are practical in warm weather. A longsleeve is better suited to cooler conditions or as a layer under a jacket. A cotton blend can be comfortable for light to moderate training; for intense running, some users prefer a lightweight synthetic fabric.

How does an Under Armour men's or women's T-shirt fit?

The Sportstyle models mentioned are described as having a regular fit and, according to the product information, generally fit true to size. However, check the chest and waist measurements for each product. A letter size is not the same everywhere, particularly when comparing different models or brands.

How long does a sports shirt last?

Its lifespan depends on how often you wear it, how intensely you train and how you wash it. Washing cold, turning it inside out and avoiding fabric softener can help keep the fabric and fit in good condition for longer. Also check the specific care instructions on the product page.