10 Best Men's Long Sleeve Rash Guards 2025 in the United States

The BALEAF Men's Long Sleeve Swim Shirt, made from 100% polyester, is designed to provide comfort and protection during various activities. The lightweight and quick-dry fabric ensures you stay dry and comfortable by wicking away moisture. The UPF 50+ rating offers excellent protection against harmful UVA/UVB rays, making it a reliable choice for outdoor activities.

The flatlock seamlines and tagless collar effectively reduce chafing, enhancing comfort. The relaxed fit with raglan sleeves allows for a full range of motion without feeling too tight, beneficial for activities like swimming, fishing, and hiking. However, as an imported product, it might not fit everyone's expectations regarding quality and longevity. While the design in Bluish Violet is stylish, the color may not appeal to all tastes.

Additionally, the thermal properties are not specified, which could be a drawback for those needing warmth in cooler conditions. This rash guard is machine washable, which is practical for regular use. It’s best suited for those who prioritize sun protection and comfort in their activewear.

The O'Neill Wetsuits Men's Basic Skins UPF 50+ Long Sleeve Rash Guard is designed with a blend of 87% polyester and 13% spandex, ensuring a comfortable, durable, and stretchy fit. The material offers a four-way stretch, which enhances mobility and comfort, making it ideal for activities like surfing, swimming, paddle sports, and general beach use.

It provides a high level of UV protection with a UPF 50+ rating, which is recommended by the Skin Cancer Foundation, effectively shielding your skin from harmful ultraviolet rays and reducing fatigue from sun exposure. The form-fitting, performance-oriented design fits snugly like a second skin, which could be a plus for some users looking for a tight, secure fit. However, it might feel too constricting for those who prefer a looser fit.

The rash guard boasts flatloc stitching and minimal seam placement, which helps to prevent skin irritation and chafing, enhancing comfort during prolonged use. Additionally, the quick-dry feature adds to its practicality, allowing it to dry swiftly after water exposure. While it offers excellent protection and comfort for warm weather and water activities, it lacks thermal properties, making it less suitable for colder conditions. The simple, sleek black design is versatile and stylish, but it may not appeal to those looking for more vibrant or varied color options. The pull-on closure and hand wash care instructions are straightforward but may require more effort in maintenance. This rash guard is well-suited for active individuals who prioritize UV protection and a snug fit during their water-based activities.

The O'Neill Men's Standard Basic Skins Long Sleeve Rash Guard is a solid choice if you need reliable sun protection and comfort during water activities like surfing, swimming, or paddle sports. It offers UPF 50+ protection, which helps block out most harmful UV rays and is even recommended by the Skin Cancer Foundation, making it great for long hours in the sun. The material blends polyester and spandex, providing good stretch and a snug, performance fit that feels like a second skin without being restrictive. This fit helps reduce fatigue from sun exposure by staying close to your body.

The flatlock stitching and minimal seam placement add durability and reduce irritation, which is important if you wear the rash guard for extended periods. While it doesn’t provide heavy thermal insulation, it works well in warmer water or as a lightweight layer under a wetsuit. The design is simple and functional, focusing on performance rather than flashy style.

One minor downside is that it requires hand washing, which might be less convenient for some users. Also, since it’s a form-fitting layer, those looking for a looser fit might want to consider sizing carefully. This rash guard is well suited for active men who want effective sun protection and a durable, comfortable fit during various outdoor water sports.