Review on 📸 Enhance Macro Photography with the 58mm Close-up Filter Kit: 4-Piece Set (+1, +2, +4, +10) Including Lens Filter Pouch, Compatible with Canon, Nikon, Sony, Pentax, Olympus, Fuji DSLR Cameras + Lens Cap by Talapon Blackburn

As another reviewer noted, the case is very cheap. Mostly fabric with some mesh and velcro randomly sewn on. I was SHOCKED when I saw that it arrived in a bubble envelope. Nothing prevents something heavy from crushing the glass during shipping as it wasn't even boxed. In any case, the glass itself looks high-quality, but the description says that they are all foldable, but they are not. Only the +1 filter has a curvature low enough to put another filter in front of it. All other filters protrude too far to screw on another filter. So along with your +1, +2, +4, and +10, you can only get +3, +5, and +11. Not that I've ever really wanted to put that much curved glass in front of the lens, but the description is obviously WRONG. I give three stars for the build quality, the clean glass and the price. But do yourself a favor and buy a filter housing.