Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Harder to use than the other types

For a reason that completely eludes me, the manufacturer decided to go against the mainstream and glue the flaps on the inside of the envelope. All other brands are glued on the outside. The main disadvantage is that CDs are harder to insert into the envelopes: they tend to get stuck between the imperfectly glued flaps and the back of the envelope. This design also offers less protection to the CD, as the flaps rub harder against it when sliding it in or out, and may even scratch it a bit. Other than that, the envelopes are okay, but the only reason why you'd buy these instead of the cheaper Fellowes product is the shipping cost.