Nature is a masterpiece. See it up close in the new collab with National Geographic — high-tech gear for spirited explorers. Celebrate the joys of being outdoors in the National Geographic Long Sleeve Shirt — no matter how big or small the adventure. The UPF50+ fabric keeps you protected from the rays, even when it's deceptively chilly out there on the trail. Defined by its versatility, the shirt can be worn as a mid-layer or styled up as a jacket, while the lightweight nylon weave has just the right amount of stretch for easy movement on the go.