The source uses “microfibre leather” and “microfibre suede” as two parallel material names. The former can form a bag body or exterior component; the latter appears inside the Doubao with its lining and dividers. They are not interchangeable without an explicit source statement.

Toray's Ultrasuede® is one example of a suede-textured nonwoven made with ultrafine fibres. Toray shows a surface, a nonwoven internal structure and a supporting scrim. This illustrates that ultrafine-fibre materials can have distinct faces and layers; it does not identify any product on this page as Ultrasuede® or as using the same formulation.

The Stand-IN Hidden EDC × NINI article describes the NI Bag body as microfibre leather and gives overall dimensions of 13 × 8.5 × 6 cm. Reinforced corner stitching and the divided interior provide support and organization; these construction details are not inherent properties of the material itself.

The maker cites wear resistance, stability and a leather-like feel as reasons for the choice. These are product claims. The article gives no material model, test method or experimental comparison with natural leather.

The NINI × NADO Doubao uses what the maker calls crystal microfibre leather and microfibre suede. Beneath the soft material sits a one-piece alloy component with nine pre-embedded magnets. A magnetic closure joins the bag, whose dark-green exterior contrasts with an orange lining.

The maker attributes the fit and selected magnetic pull to repeated adjustment of the soft material, metal components, magnets and dimensions as a system. The nine magnets and the alloy component are not constituents of microfibre leather, and neither alloy grade nor magnet grade can be inferred from the photographs.

The NI Bag M release lists “denim + microfibre leather” and describes distressed vertical-slub denim as the base. The visible exterior also has light-brown corner panels and a handmade leather patch, but the source does not assign a specific material to either item. Microfibre leather is therefore one part of a mixed exterior; the dark-blue body should not also be classified as microfibre leather.

Overall dimensions are 13 × 9 × 7 cm. This release also changes to a non-metallic zipper with moulded plastic teeth. The dimensions describe the finished bag, while the zipper remains a separate component from the denim and microfibre-leather exterior.

First determine whether the exterior is entirely microfibre leather or combines denim with microfibre-leather parts. Then separate a microfibre-suede lining from other lining and divider materials. Finally, keep zippers, alloy components, magnets and stitching distinct from the soft covering.

Colour and surface texture can describe appearance, but they cannot replace the source's material assignment. Without formulation, thickness or test data, this page does not infer polymer type, ingredient ratios or an abrasion grade.