Product details:

Simms' men's Solarflex Crewneck has your back when a sweltering sun and hot, stagnant air threaten to send you indoors and cut short your afternoon on the water. Hard-working COR3 features arm you with odor-fighting, sweat-wicking protection, and a UPF 50 rating against harmful rays. A high-backed collar keeps your neck shielded from the beating sun. COR3 performance standard: Anti-odor treatment, mechanical wicking knit structure, and UPF 50 rated Flat-seam construction Raglan-sleeve design for unrestricted movement High-backed collar for additional sun protection Quick drying 100% polyester Fabric Tech: 100% polyester Size Chart Products using the COR3 Technology fabric finish have a UPF rating of 30 or greater, properties to minimize odor and outstanding wicking performance for important moisture management. The anti-odor finish helps control odors caused by a wide range of microorganisms (mold, mildew, algae, yeast) is compatible with virtually all fabrics. All of our performance cotton clothing utilizing COR3 also feature COR3 EZ. The "EZ" means easy care and indicates that garments featuring this treatment will travel well and resist wrinkles. Through a combination of fabric construction, design and finish, Solarflex offers UPF50 sun protection. UPF is a measure of how much of the sun's UV radiation is absorbed by the fabric. A UPF 50 rating means that only 1/50 of the sun's UV radiation will pass through the garment.