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 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.

The O'Neill Wetsuits Men's Standard O'Neill Basic Skins UPF 50+ Long Sleeve Sun Shirt is an excellent choice for various water activities such as surfing, swimming, paddle sports, and beach outings. One of its standout features is its UPF 50+ rating, providing significant protection from harmful UV rays, a crucial factor for extended outdoor exposure. The shirt is made from a durable yet comfortable blend of 87% polyester and 13% spandex, ensuring a good balance between flexibility and sturdiness.

The slim fit design ensures it fits close to the body without feeling too tight, making it comfortable for prolonged wear and active movements. The minimal seam placement is a thoughtful addition that significantly reduces the risk of chafing and rashes, enhancing comfort during use. However, it’s important to note that the shirt is hand wash only, which may be less convenient for some users who prefer machine-washable garments. Additionally, while it provides excellent UV protection, it lacks significant thermal properties, making it more suitable for warmer conditions rather than cold water environments.

From a style perspective, the shirt comes in a sleek blue color that is both stylish and practical for spotting in water. For those looking for a reliable, comfortable, and protective rash guard for their water adventures, this product stands out, although those needing additional thermal protection might need to look elsewhere.