The portable speaker system is great, but if the Lil Buddy can't keep your beer cold, then what good is it? Thankfully, the Lil Buddy's insulated lining worked like a charm. We left cold beer in the bag overnight, and when we pulled it out the next morning it still had some chill on it. The best part: We got to expense a 12-pack of beer in the name of product testing. Hooray, beer!