This is a great product. The cap threads on, TIGHT, and doesn’t leak a drop. In the trunk of my motorbike through 118 degree desert ride. I carry it at work (heavy equipment mechanic) and not one has opened unless I opened it. I’ve bought 15-20 other products and none hold to the quality of this. Several of the other carabiner unit crack or leak shortly after purchase, these have been refilled dozens of times and I haven’t lost one yet. The product is very good and doesn’t have an odd odor, nor does it dry my hands out. The molded hole for the carabiner is rounded so it moves when I move. All this, not to mention there’s 2.0 ounces, more than most others. Best unit over been able to find. All my guys use them now, and I’m not having to buy new ones every week.