Joybuy Insights

Choosing men's Under Armour sports shorts: a practical guide to fit, fabric and use

Sports shorts need to do more than look sporty. When choosing men's Under Armour sports shorts, many shoppers focus mainly on colour or brand name. As a result, important differences in fabric, fit and pockets may only become apparent when the shorts feel uncomfortable during a workout.

Three common pitfalls are:

  1. Confusing a loose fit with freedom of movement
    Roomy sports shorts can be comfortable at home, but during running or fitness, excess fabric and loose seams can get in the way more easily.

  2. Reading “moisture-wicking” without checking the fabric
    This term does not automatically tell you how lightweight, breathable or quick-drying a pair of shorts is. Also check the fibre composition, mesh panels and whether there is an inner short.

  3. Wearing cotton shorts for high-intensity training
    Cotton feels soft, but can retain moisture for longer. That can be fine for warm-ups, everyday use and relaxing at home; for running or demanding fitness sessions, synthetic, breathable sports shorts are often more practical.

Which features should you check?

1. Fabric and moisture management

For cotton sports shorts or men's fleece shorts, comfort and warmth are key benefits. According to the product information, the Under Armour Rival Fleece models are made from 80% cotton and 20% polyester. The inside is brushed, making them suitable for cooler days, warm-ups and relaxed use.

If breathability is your priority, polyester and elastane are worth considering. The Launch 7'' 2-in-1 Shorts have an outer layer made from 100% polyester and an inner short made from 90% polyester and 10% elastane. According to Under Armour's product information, the fabric is designed to wick away moisture and dry quickly. The mesh panels are intended to provide extra ventilation.

Please note: a claim such as “odour control” is a product feature from the brand description, not a guarantee that odours will disappear in all circumstances. Following the care instructions and allowing sufficient drying time are still important.

2. Fit and inside leg length

The right length depends on how you plan to use them:

  • 6-inch shorts offer a middle ground for training, everyday wear and warm-ups.
  • 7-inch 2-in-1 shorts provide slightly more coverage and combine an outer short with a close-fitting inner short.
  • Men's compression shorts fit closely against the body and are often worn as a base layer or for training.
  • A fleece model with an inside leg length of 25 cm feels slightly longer and warmer than 6-inch shorts measuring approximately 15 cm.

As well as checking the letter size, measure your waist and hips. According to the size chart, size M in the Rival models corresponds to a waist of 79–86 cm, while size L corresponds to 86–94 cm. For the Launch 2-in-1, size M corresponds to 79–86 cm and L to 86–94 cm. The HG Armour Shorts have a compression fit; according to the product information, anyone who prefers a less tight fit or falls between sizes may wish to consider sizing up.

3. Pockets, waistband and freedom of movement

Men's sports shorts without useful pockets are less convenient for carrying keys, cards or a phone. So do not just check whether pockets are included; also consider where they are positioned.

The Rival Fleece Shorts have open hand pockets and a secure back pocket with a press stud. The Rival Terry 6In Shorts have open hand pockets and an elasticated waistband with a drawcord. The Launch 2-in-1 also has an internal phone pocket on the right-hand side. This is practical when walking or warming up, but when running, check whether your phone remains secure and comfortable for you.

Recommended models for different needs

Suitable for: Budget-conscious beginners
Under Armour Men's Rival Terry 6In Shorts Blue Sportstyle Collection M

Under Armour Men's Rival Terry 6In Shorts Blue Sportstyle Collection M

Why it suits this profile: These blue sports shorts have a regular fit and are suitable for fitness, warm-ups, everyday wear and relaxing at home.

How this product avoids the pitfall

The product information specifies an adjustable waistband and a 6-inch inside leg length, so you do not have to rely on appearance alone.

Key benefit & highlights

80% cotton and 20% polyester, regular fit, open hand pockets and an external drawcord fastening.

Suitable for: Shoppers seeking 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: This grey model is designed to provide warmth and comfort in cool weather, during light training and when relaxing at home.

How this product avoids the pitfall

The brushed fleece interior makes it clear that these are not lightweight running shorts, helping you match the fabric to the season.

Key benefit & highlights

80% cotton and 20% polyester, regular fit, open hand pockets and a secure back pocket.

Suitable for: Specific activities & high-intensity users
Under Armour Men's Launch 7'' 2-In-1 Shorts Black Sportstyle Collection L

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

Why it suits this profile: These black men's 2-in-1 sports shorts are suitable for running, high-intensity fitness and training sessions where you want extra coverage and ventilation.

How this product avoids the pitfall

The inner short helps prevent loose fabric, while the “fitted” size designation makes the close-fitting design clear from the outset.

Key benefit & highlights

Polyester outer layer, elasticated inner short, mesh panels, phone pocket and reflective details according to the product information.

Care and durability

Follow the care label to help prevent wear and loss of shape. According to the product information, the Under Armour models mentioned can be machine-washed on a cold cycle. Do not use fabric softener, avoid bleach where it is not permitted and tumble-dry at a low temperature. After exercising, allow moisture-wicking shorts to air fully before storing them away.

Do not wear a fleece model for every high-intensity running session if quick-drying fabric is your priority. Conversely, lightweight running shorts provide less warmth during a cold warm-up. The right choice therefore depends on training intensity, the season and your preferred 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 men's Under Armour shorts

Which Under Armour sports shorts are suitable for running?

For running, a lightweight model made from moisture-wicking fabric with ventilation is an obvious choice. According to the product information, the Launch 7'' 2-in-1 has a polyester outer layer, mesh panels, a close-fitting inner short and reflective details. However, check that the fit and phone storage remain comfortable at your pace.

How do I choose the right size?

Measure your waist around its natural position and compare it with the size chart for the specific model. A regular fit, such as the Rival Terry or Rival Fleece, offers more room. HG Armour Shorts have a compression fit and feel considerably tighter. If you are not used to this, follow the size guidance on the product page and consider choosing the larger size if you are unsure.

Are cotton sports shorts suitable for the gym?

Cotton sports shorts can be comfortable for strength training, warm-ups and low-intensity activities. For high-intensity cardio or longer sessions, a synthetic, quick-drying fabric is often more practical. So check the composition and choose men's training shorts based on the activity, not just the colour or brand.