Nike Dri-Fit Zip Up Jacket

Nike Dri-Fit zip up sweater/jacket. It's in good condition. It has thumb holes and it's good workout and athletic wear material. However the zipper is weird. You can't unclasped the zipper of the jacket if that makes. You can run the zipper up and down, it opens and closes, but when you try to take off the zipper like normal at the bottom you can't. I have more Nike in my page!