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Posted by AllDayShirts on to Printing Techniques., Product Guides
Spending time outdoors is part of everyday life for athletes, workers, travelers, and outdoor enthusiasts. But whether you're fishing by the lake, running weekend drills, or coaching under the blazing sun, exposure to harmful UV rays can take a serious toll on your skin and energy levels.
Fortunately, A4—known for high-performance athletic apparel—offers a range of UPF-rated long sleeve shirts that provide exceptional sun protection, breathability, and moisture-wicking power. In this comprehensive guide, we’ll explore the importance of UPF (Ultraviolet Protection Factor), and showcase three top-tier outdoor garments: the N3409 Sublimation Tee, N3425 Hooded Sun Shirt, and the N3165 Performance Long Sleeve Tee.
The sun emits ultraviolet (UV) radiation, which can cause sunburn, premature skin aging, and increase the risk of skin cancer. According to the Skin Cancer Foundation, clothing is the first line of defense against UV radiation—and not all fabrics are created equal.
While a regular cotton T-shirt offers minimal protection (UPF rating around 5), specially engineered performance apparel can provide UPF ratings of 30, 40, or higher, effectively blocking over 95% of harmful rays. UPF-rated apparel is lightweight, breathable, and built for active lifestyles, making it a smart investment for anyone who spends time outside.
UPF stands for Ultraviolet Protection Factor, a rating that indicates how much UV radiation a fabric allows to reach your skin.
UPF 15–20: Good protection
UPF 25–35: Very good protection
UPF 40–50+: Excellent protection
A shirt with a UPF rating of 44, for example, allows only 1/44th of the sun’s UV rays to penetrate the fabric—just 2.3%, offering over 97% protection. That’s why UPF-rated clothing is essential for anyone spending extended time outdoors.
All three A4 styles featured in this guide are engineered with UPF 44+, placing them in the top tier of sun-protective apparel—ideal for athletes, outdoor workers, and summer adventurers alike.
Want to better understand how color affects heat and sun absorption in T-shirts? Check out this helpful resource from AllDayShirts:
Difference in Heat Absorption for Colors – What You Should Know About T-Shirts
Before diving into each style, let’s look at the shared features that make these shirts stand out:
Each garment provides superior sun protection, blocking out more than 97% of UVA and UVB rays.
A4's fabric technology pulls sweat away from the body and dries quickly, keeping you cool and comfortable even during intense activity.
Designed to resist odors, these shirts remain fresh even after long hours of wear.
Each shirt is built for mobility—ideal for sports, training, or any work that demands freedom of movement.
Best for: Custom printing, sports teams, and high-sweat activities
The N3409 is a long sleeve polyester tee built specifically for sublimation printing, making it ideal for custom uniforms, team branding, or bold graphics that won’t fade.
Key Features:
100% polyester interlock fabric
Sublimation-ready surface (perfect for vibrant all-over prints)
UPF 44+ for excellent UV protection
Moisture-wicking and odor-resistant
Double-needle hems and shoulder seams for durability
Tag-free neck for added comfort
Why It Stands Out:
The N3409 isn’t just sun-protective—it’s a powerhouse for teamwear and branded performance gear. The smooth, colorfast fabric is ideal for bold customization, while the built-in sun protection makes it perfect for outdoor sports or all-day wear.
Best for: Fishing, hiking, beach days, and extended sun exposure
The N3425 is the ultimate blend of sun protection and breathability. Featuring a lightweight hood, it’s designed for all-day outdoor use and built with comfort and function in mind.
Key Features:
100% polyester with a lightweight, breathable construction
Attached hood for added head and neck protection
UPF 44+ sun shield
Moisture-wicking and antimicrobial properties
Roomy fit and tag-free neck
Great for layering or wearing on its own
Why It Stands Out:
The hooded design offers an extra layer of UV protection without sacrificing breathability, making the N3425 a favorite among anglers, boaters, hikers, and coaches. It delivers serious sun coverage without overheating.
Best for: Everyday training, coaching, and multi-sport use
The N3165 is a go-to classic performance long sleeve tee with a minimalist style and maximum function. It’s versatile enough to wear as a workout top, base layer, or uniform piece.
Key Features:
100% polyester performance fabric
UPF 44+ for high-level sun protection
Moisture management system to keep skin dry
Odor-resistant technology
Tapered fit with reinforced seams
Tag-free for irritation-free comfort
Why It Stands Out:
If you're looking for a versatile, no-fuss long sleeve that can be worn for nearly anything outdoors, the N3165 is it. From construction sites to soccer fields, this shirt is all about performance and protection.
Whether you're an athlete, outdoor worker, or weekend warrior, UPF clothing is essential in a variety of settings:
Construction and Landscape Workers: Long sleeves provide coverage from both sun and abrasion.
Athletes and Coaches: Stay cool and protected during outdoor practices and games.
Hikers and Campers: Reduce sun exposure on the trail while keeping cool.
Fishermen and Boaters: The hooded N3425 is perfect for water environments with high UV reflection.
Travelers and Vacationers: Pack light with sun-protective garments that double as activewear.
Many people rely solely on sunscreen for UV protection, but it has limitations:
Needs to be reapplied every 2 hours
Can rub off with sweat or water
Doesn’t provide complete body coverage
Performance UPF apparel covers more skin, doesn’t wash off, and offers consistent protection all day—no reapplication required. It’s also eco-friendlier by reducing chemical runoff into the environment.
A4 performance shirts are not only engineered for high function, but also built to last. Their durable stitching, colorfast polyester, and odor-control features mean you’ll get extended use—reducing waste and lowering your cost per wear.
Bonus: Polyester performance shirts also require less water to wash and dry quickly, making them more sustainable than many cotton alternatives.
To keep your sun-protective shirts working as intended:
Wash in cold water
Use mild detergent (no bleach or fabric softeners)
Avoid high-heat drying—tumble dry low or hang dry
Do not iron or dry clean
Proper care ensures the UPF rating stays intact and the shirt retains its moisture-wicking and antimicrobial features.
When it comes to outdoor apparel, it’s not just about comfort—it’s about protection. With UPF 44+ sun defense, sweat-wicking technology, and lightweight durability, A4’s N3409, N3425, and N3165 long sleeve shirts are smart investments for athletes, professionals, and outdoor enthusiasts alike. They’re not just shirts—they’re shields against the elements, built for high output and maximum comfort.
In fact, exercising in the heat can put added stress on your body, especially if you’re not wearing the right gear. According to Men’s Health, proper clothing that manages sweat, heat, and sun exposure is key to staying safe and performing at your best in hot conditions—exactly what A4 performance shirts are engineered to do.
Looking to gear up with UPF-rated A4 shirts at unbeatable prices? Explore the full range at AllDayShirts.com. Whether you need one or 100, we offer wholesale pricing, no order minimums, and fast shipping—so you can stay protected, perform your best, and enjoy the outdoors all summer long.
Please email media@alldayshirts.com