【Perfect Fit for Logitech MX Master Series】Custom-designed to securely hold Logitech MX Master 4, MX Master 3S for Mac, and MX Master 3 mice. Precision-cut interior prevents scratches and damage during daily commutes or travel. 【Thoughtful Internal Structure】Features a molded design with bubble padding, perfectly accommodating the mouse and USB receiver. Precise compartments with protective foam cushioning support every part of the mouse, safeguarding scroll wheels, buttons, and body from impacts. 【Durable Exterior】Constructed with high-quality, robust materials to withstand daily use. The scratch-resistant, tear-proof, and wear-resistant exterior combines with internal foam padding to create a strong defense system against external wear and internal impacts. 【Travel-Friendly】Equipped with a convenient carabiner for easy attachment to laptops, backpacks, or keychains. Protects your mouse from bumps, drops, and dust, ensuring it remains in pristine condition while keeping it organized during travel. 【Compatibility Note】This hard case is designed specifically for Logitech MX Master series mice. Please ensure your mouse's dimensions match the case for a proper fit. Mouse and accessories not included. Specifications: Dimensions: 14.8 x 11.5 x 6.8 cm Material: Nylon + EVA Weight: 80g