UPF50+ & Sun Protection: Santiny sun shirt provides fantastic UV protection with its UPF 50+ fabric and thumb holes, keeping your skin safe during long days at the beach or on the water without worrying about sunburn. Quarter Front Zip: Half zipper is smooth and great for moderating your temperature. You can zip it up for full sun protection, or zip it down to cool off if it's too warm, enough for ventilation. It's easy to put on or off your swim shirt at the pool thanks to the zipper design. Slim Fit & Chafe-free Comfort: Our SPF long sleeve top is slightly tapered in waist area so it's sculpted and not boxy. You're able to wear it semi-loose, not tight and fitted but not too loose. And the flatlock seams provide a chafe-free and comfortable surfing experience. Quick Dry & Lightweight: Super soft and stretchy, the quick dry material wicks moisture away from the skin, giving you a cooling relief when you're active in the harsh sun. It's so lightweight that it doesn't drag you down in the pool or weight a ton when getting out. Versatile Tops for Any Occasion：Whether you're catching waves or catching some rays, santiny rash guard has you covered, ideal for anyone who loves outdoor adventures. On point for swimming, fishing, boating, paddleboarding, surfing, diving, bathing, hiking, golfing, beach walk and everyday use.