This New Era Cage Short Sleeve 1/4-Zip Jacket is perfect for those who love an active lifestyle, such as runners, cyclists, and fitness enthusiasts. You can wear it during outdoor workouts like jogging in the park or cycling on a sunny day. It's also suitable for indoor activities in a well - ventilated gym. The jacket has a relaxed fit that allows you to move freely without any restrictions. Although the specific size and weight aren't mentioned, it's made from a blend of polyester and spandex, which gives it a lightweight and stretchy feel. And with its UPF 30 UV protection, it's great for sunny days to keep your skin safe.