The men's t-shirt is an essential staple in any wardrobe, especially for outdoor activities throughout the year. Whether you are mountain hiking, trail running or simply enjoying a day outside, choosing the right t-shirt is key to staying comfortable and stylish. In this guide, we walk you through the different types of men's outdoor t-shirts and the key criteria to consider when selecting the right model.

Choosing technical and breathable fabrics
Choose a t-shirt made from technical, breathable fabrics such as polyester or a polyester-elastane blend. For soft, natural comfort, cotton models are also available, offering a great feel against the skin. In warm weather, cotton t-shirts provide natural breathability. Consider t-shirts with built-in UV protection, especially useful for outdoor activities in direct sunlight. In winter, a merino wool t-shirt can replace your thermal base layer to provide added warmth. For activities in direct sun, choose a t-shirt with integrated sun protection and a clearly stated UPF rating.
Key priorities: Fit and comfort
A fitted t-shirt is generally preferred to eliminate excess fabric that could get in the way during physical activity. Opt for short sleeves or a tank top for greater freedom of movement, especially in summer. Polo shirts, with their structured collar, offer a smarter alternative that pairs easily with jeans or shorts for a relaxed look.
Tips for choosing the right t-shirt
- A fitted t-shirt: to achieve the right fit, your t-shirt should be neither too tight nor too loose. Too loose, and it will look unflattering. Too tight, and it will feel restrictive and look awkward.
- Shoulder seams: the seams should ideally sit right at the edge of your shoulder where your arm begins. If the seams drop down onto your arm, the size is too large. If they sit before the edge of your shoulder, it is too small.
- The right length: if the hem of your t-shirt sits above your hips, it is too small; the hem should cover your belt line and sit slightly below it. It should not be overly long either—the goal is not to wear a tunic. When trying it on, raise your arms: it is a quick, reliable check to see if it rides up too high.
New from Cimalp!
At Cimalp, we have developed a line of men's t-shirt lifestyle, including polo shirts and short-sleeved t-shirts. They are built to go wherever you do—from outdoor sports and travel to daily commutes.
Key features of our models
- Composition: 50% cotton / 50% polyester
- Fit: Straight / Regular
- UV protection: UPF 30
- CIMAFRESH® technology: Breathable & anti-odour
Opt for a t-shirt made from technical, breathable fabrics that offer sun protection and fast drying. Ensure the cut and fit give you full freedom of movement, and check the build quality for long-lasting durability. Finding the right balance between functionality and style will ensure you are ready for any outdoor activity in total comfort.