This is a pen case from Le Bonheur. It securely protects fountain pens, so you can carry them around with peace of mind. It's a high-quality item, so I think I'll be able to use it for a long time to come. For a size comparison, from left to right, I have a Montblanc 146, a Pelikan m805, and a Pilot Hannya Shingyo pen inside.