Designed to fit the K380 wireless keyboard securely with precise sizing for a snug cover. Firstuse fit guidance: If the cover feels tight at first, place the keyboard inside the bag for a few days; the bag will loosen slightly to improve fit. Smooth and comfortable: The surface feels smooth to the touch, with neat, dense stitching that is durable and not easy to crack. Lightweight and portable: Extremely easy to carry by hand or under your arm, making it convenient for travel and daily use. Protective material: PU leather provides waterproof, dustproof, and scratchproof protection for your keyboard. Use scenarios: Travel or commuting: protects your K380 in a bag, shielding it from moisture, dust, and minor bumps. Office or school: convenient protective cover for desk drawers, backpacks, or totes between uses. Home use: keeps the keyboard clean and safeguarded on a couch, bed, or side table when not in use.