This is really a very nice hard protective case. Maybe I should have purchased a slightly larger version but as it is I am not unhappy with my choice at all. As a music enthusiast I wanted to be able to protect my personal, portable audio gear not only when not being used at home, but also any time that I might be traveling. I usually listen to music on headphones and rather than loading mp3 files onto my cell phone I listen instead to FLAC files using a portable DAC/Amplifier and DAP.I have found this small case sufficient enough to keep my Fiio BTR7 and BTR17 DAC/Amplifiers and Surfans F20 DAP well secured and safe inside and still have a bit of future space remaining, perhaps for a headphone cable and for additional micro SD cards. The Surfans F20 will only accept micro SD cards up to 256 GB and as an old school album guy I tend to require additional cards. It's nice to be able to take a big assortment of albums along with you on the road!I was very happy to find that this case came with the foam already pre-installed. I used a pairing knife to cut along the perforated lines. It's not a perfect fit but I am pretty anal when it comes to taking case of my belongings and wanted to do a nice job. I figure that if I can live with it then I did well enough.I recommend this case highly to anyone who enjoys the hobby which I have participated in for nearly 50 years. It seems to be well constructed, looks nice and should last for a long, long time.