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Under Armour men’s Sportstyle cap: how to choose the right colour, size and fit

An Under Armour men’s Sportstyle cap may seem like a simple purchase, but small differences in size, material and fit determine whether you wear it regularly or leave it in the cupboard after a few weeks. This is particularly true of a fitted model, as returning it can be a hassle if you have not measured your head correctly.

Keep an eye out for these common pitfalls:

  • Choosing based on colour alone: a blue men’s cap or navy men’s cap may look different online depending on screen settings and lighting. Always check the official colour description.
  • Expecting a one-size-fits-all fit: these models use fixed size ranges and stretch. A cap that is too tight can become uncomfortable during training, while one that is too loose may shift when cycling or running.
  • Confusing marketing terms with guarantees: terms such as “breathable”, “moisture-wicking” and “odour control” refer to features in the product description. According to Under Armour’s own information, these models have a HeatGear sweatband and a material construction designed to help move moisture away from the skin. This does not guarantee the same level of comfort for every wearer or in every weather condition.

1. Measure your head circumference accurately

Use a flexible tape measure to measure approximately 2.5 cm above your eyebrows and just above your ears. Keep the tape in contact with your head, but do not pull it tight. Note the circumference in centimetres and compare it with the size guide:

  • S/M: 54.0–57.2 cm
  • M/L: 55.9–59.1 cm
  • L/XL: 57.8–61.0 cm
  • XL/XXL: 59.7–63.5 cm

The size ranges overlap. If you are between two sizes, think about how you want the cap to feel. For a closer stretch fit, the smaller size is the obvious choice; if you prefer a little extra room during outdoor activities, consider the larger size. Always check the available size for each product, as not every colour variant is available in every size.

According to the product information, the Sportstyle models have a low-profile design with a structured front panel. This panel retains its shape and gives the cap the look of a classic men’s baseball cap. A pre-curved brim can be practical for everyday wear, walking or outdoor training.

The material is made from 100% polyester. The product description also mentions a breathable, textured knit fabric with stretch. Here, “breathable” means that the fabric is designed to offer a more airy feel; it is not a defined performance rating for ventilation. If you are looking for a cap for training, it is also worth considering the sweatband and how securely the cap sits on your head.

3. Check care instructions and everyday use

According to the supplied care information, you should hand-wash the cap in cold water or spot-clean it, depending on the variant. Do not use bleach, fabric softener or a tumble dryer. Allow the cap to air-dry naturally, away from direct heat, and do not iron it.

This care routine is important for maintaining the shape of the front panel and brim. A polyester men’s baseball cap is practical for regular use, but intensive machine washing can affect its fit and finish. The product description also mentions embroidered logos and odour-control technology on various variants. According to Under Armour’s own information, this technology is intended to help reduce unwanted odours; its effectiveness may vary depending on the conditions of use.

Our recommendations for different usage profiles

Suitable for: Budget-conscious beginners
Under Armour Men's Cap With Logo Blue Sportstyle Collection S/M

Under Armour Men's Cap With Logo Blue Sportstyle Collection S/M

Why it suits this profile: The S/M size is suitable for head circumferences of 54.0 to 57.2 cm. The blue colour and embroidered logo work well for sporty everyday wear.

How this product avoids the pitfall

The size chart removes the need to guess based on a “standard size”. The structured front also means you are not choosing the cap solely because of its soft, unstructured appearance.

Key benefit & advantages

100% polyester, stretch construction, low-profile shape and a moisture-wicking HeatGear sweatband according to the product information.

Suitable for: Buyers looking for premium quality
Under Armour Men's Cap With Logo Midnight Navy Sportstyle Collection L/XL

Under Armour Men's Cap With Logo Midnight Navy Sportstyle Collection L/XL

Why it suits this profile: Midnight navy with white is easy to pair with sportswear and casual clothing. The L/XL size is designed for 57.8 to 61 cm.

How this product avoids the pitfall

The product information provides a specific size range and explains that, if you are unsure, you can choose a smaller or larger size depending on how close a fit you want.

Key benefit & advantages

Pre-curved brim, structured front panel, stretch fit and embroidered logos according to the product description.

Suitable for: Specific use & intensive users
Under Armour Men's Cap With Logo Blue Sportstyle Collection XL/XXL

Under Armour Men's Cap With Logo Blue Sportstyle Collection XL/XXL

Why it suits this profile: This blue sports cap for men offers a size option for a head circumference of 59.7 to 63.5 cm. That makes it suitable for larger head sizes.

How this product avoids the pitfall

The available XL/XXL size prevents a larger head circumference from being squeezed into a cap that is too small, such as an M/L. Measure first before ordering.

Key benefit & advantages

Structured front, stretch construction and a breathable textile fabric with HeatGear sweatband according to the product information.

Suitable for: Neutral everyday style
Under Armour Men's Cap With Logo Grey Sportstyle Collection M/L 2

Under Armour Men's Cap With Logo Grey Sportstyle Collection M/L 2

Why it suits this profile: A grey men’s cap is easy to pair with jeans, training clothes and jackets. M/L fits 55.9 to 59.1 cm.

How this product avoids the pitfall

The neutral colour makes it easy to wear every day, while the size chart helps ensure that you do not choose based on appearance alone.

Key benefit & advantages

100% polyester, low-profile baseball cap shape, stretch fit and embroidered Under Armour logo.

Looking for more options?

We have compiled 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 an Under Armour men’s Sportstyle cap

Which Under Armour cap size do I need?

Measure your head circumference above your ears and compare it with the size guide for the model you have chosen. S/M generally covers 54.0 to 57.2 cm, M/L 55.9 to 59.1 cm, L/XL 57.8 to 61.0 cm and XL/XXL 59.7 to 63.5 cm. Where sizes overlap, your preference for a close or roomier fit will determine your choice.

Is a HeatGear cap suitable for training?

The product description mentions a stretchy HeatGear sweatband designed to help move moisture away from the skin, as well as a textured knit fabric. According to Under Armour’s own product information, the cap is intended for everyday use, training and outdoor activities. How comfortable it feels also depends on the temperature, level of exertion, fit and personal preference.

Follow the care instructions for the variant you have chosen: hand-wash in cold water or spot-clean, do not bleach and do not tumble-dry. Allow the cap to air-dry naturally, away from direct heat. This helps reduce the risk of the brim and front panel losing their shape.