Microfibra (or microfibre) is synthetic fiber finer than one denier or decitex/thread, the most common types of microfiber are made variously of polyesters; polyamides (e.g., nylon, Kevlar, Nomex); and combinations of polyester, polyamide, and polypropylene. Microfiber is often used to make jewelry pouch bag and backpack bags, they are softness, toughness, absorption, water repellence, electrostatics, and filtering ability.
Microfiber fabric is lightweight, durable, and somewhat water repellent, so it makes a good substitute.