Perfect Fit for Logitech MX Master Series: This case is tailor-made to snugly hold Logitech MX Master 4, Logitech MX Master 3S for mac, Logitech MX Master 3. Thoughtful Internal Structure: The interior of the MX Master 4 case boasts a custom - molded design with bubble padding, perfectly accommodating Logitech MX Master 4, Logitech MX Master 3S for mac, Logitech MX Master 3 and Logitech Master MX 4 USB receiver.
eBay