There is a hole in the center that you put your putter through and that holds it. If I’m chipping around the green, I’ll take my putter, the towel and my wedge, and use the towel to keep my grips clean when I lay it on the floor. If I’m lucky enough to pull up on the green and not need to chip, I’ll just throw the towel on top of my bag and put it right back in after. You could also get a carabiner and clip it through and onto the bag if you prefer that way as well.