Arrived in one piece, which is amazing for glass. Little funnel works great. Not easy to clean, but not hard. Just a bit more effort, which I think is just the fact they are bottles.
Just a heads up, the stopper bit comes off so you can clean it, which is great. But if you're making a ginger beer or the likes, watch out. The pressure was enough when I tried to burp one bottle, the stopper bit (and the metal parts) was ripped off the bottle and flew across the room. Just a warning! But besides that works great!