Elonbo Mouse Carry Case for Logitech MX Master 3 / Master 3S / Master 2S / Master 2 Advanced Wireless Mouse, Bluetooth Mouse Travel Case Bag, Extra Space for Charging Cable USB Receiver, Black - Newegg.com
Looks like the Logitech MX Master 3 will have a USB-C port! : r/UsbCHardware
TK Computer Store - Logitech MX Master 3 = 122$ - 4000 dpi optical sensor - Darkfield high precision sensor - Revolutionary multi-computer control - Quick charge with full days battery in