Instruct: Classify a given review into positive or negative sentiment.
Query: Convenient for cleaning lens on trips.

Very convenient...packed individually. I keep the big pack in my big camera backpack, and if I use my small camera bag for short trips, I just tear off a few individual packs to carry along in the small bag. Moistened cleaning cloths are so convenient for occasions when some water is splashed onto the lens and won't brush off.