Not only to protect your player and small thing, but also make the things easy to find and offer you a clear seeing.
Some suitable AGPtek product size:
Protection: with hard EVA metal and two Internal net surface to make the things more safety and stability.
Convenient: with double zipper to be more easy to open and close.
Buckle: with mountaineering buckle to hang on the backpack.
Portable: small size and lightweight to keep in bag and easy to collect earphones, mp3, USB cable, memory card and so on.
Suit for AGPtek player: A02, A06, A18, B03, B05, C05 and so on.