Despite being labelled as for '12 string' guitars, there is not a lot of extra room at the top of the headstock and a normal 6-string dreadnought fits perfectly without too much excess. For a rigid foam case these are really excellent. The covering is tough and resistant, the foam itself nicely rigid with very good shock absorbing qualities. The zippers have good-sized grips and all of the straps are well made. For normal day-to-day use these are hard to beat. They are not a replacement for a true flight case in extreme situations, but for carrying locally are wonderful. If I was not pretty confident I would not be carrying my 1945 Martin D-18 in it. While it goes in a Calton for long distance travel, locally, it goes in this Gator.