I was looking for reusable, resealable bottles to store my finished water kefir and kombucha brews in my refrigerator and still have easy access to them for consumption. These work great! The flip top works well for keeping the contents under pressure during secondary fermentation, so my brews develop "fizz", similar to carbonation. The 32 oz. (1 quart) size bottles are perfect for storing large quantities of the different flavor brews I'm experimenting with, in my refrigerator, without taking up a lot of shelf space. The glass is thick and sturdy and should last a long time. The gaskets on the caps are easily replaceable with "Grolsch" style rubber washers if they wear out.The bottles are shipped without the flip tops installed, but it's not too difficult to install them, once you figure out the correct orientation of the wire "fingers" into the pockets on the bottle neck. Hint - Look closely at the picture of the lid installed on the bottle and notice the "fingers" of the lower "C" shaped wire that wraps around the bottle neck, (not the upper wire part that goes through the cap). Notice that they are ABOVE the "C" shaped wire that wraps around the bottle neck and are fitted into the pockets on the sides of the bottle neck. I mistakenly installed the first one with the fingers below the "C" shaped wire and guess what, it wouldn't close. Duh. I gently pried off the wire and re-installed it with the fingers above the "C" shaped wire. Tada! Success. I made sure all the other tops were oriented correctly and simply inserted one wire "finger" into the corresponding pocket on the side of the bottle neck and "snapped" the other finger into the pocket on the other side. No problemo, finished all the other installs in no time. :o) If you feel you're not mechanically inclined, I believe I read somewhere that if you request at checkout that the seller install the caps for you, they will do that at no charge, before they ship out your bottles. Oh, and you might want to pick up a bottle brush while you're here, you'll probably need one to clean them at some point.