I accidentally bought two of these on Amazon. I opened one intending to use it, but ended up not using it, and several months have passed (purchased in August 2025), so I'm selling it. By the way, I use it as a mother and child health handbook case (B6) and find it very convenient. My B6 size planner was a tight fit depending on its thickness, making the zipper difficult to close (I'm testing this with the one I'm currently using out of the two I bought). ● Product Description from the Website: A versatile case that can be used for a wide range of purposes, from travel to a mother and child health handbook case. It is roughly divided into three parts, and the middle part can hold many cards. The other parts are relatively flexible pockets, so you can use them according to your needs. 【Material】 CORDURA(R) Nylon 100% 【Size】 H=21 W=15 D=2.5