ELECOM Official Hard EVA Travel Protection Storage Case Replacement for M-XT2&3 Series, Wired/Wireless Thumb Control Trackball Mouse, Ergonomic Design, Optical Gaming Sensor - Case Only (BMA-XT2BK)

There isn't a case for the MX-T4DRBK model but the trackball fits inside and the case closes. If you have the Elecom left handed trackball and need a case this will work well.

Holding up very well during my daily travails, getting thrown into my overstuffed PC backpack. I'll definitely another for my next trackball.

My daughter liked her new trackball that she started carrying it back and forth from school to use with her Chromebook then back home to use on the family PC and sometimes an extra laptop. I didn’t want the trackball banging around her backpack so we got this case to keep It protected. It’s a nice fit and does a good job protecting the trackball from getting scuffed and keeping all its parts together. It is not super rigid and is fairly lightweight. Overall happy as it does what I bought it for. I like that it had a small spot for the USB key to sit on its own.

Maybe it's little big and weighty but the overall product is nice...

Great price, great product!

Exactly as described. Works nicely. Slightly larger than the mouse that I have but that’s fine.

I like having a case for each mouse so I was happy to find a mouse that came with a case for it.

I use it for work and it works great. The case protects the mouse great when I throw it in my toolbox.

This is a perfect fit item. I have had this for a while and stored the mouse away in various places and it is as good as new.

トラックボールは、精密機器だと思います。布袋等に入れての移動で、トラックボールにダメージを与えて、 移動先で不具合が出たら大変です。また、安心して保管できます。モデル専用になっているので、モデル以外のトラックボールは、適応されていません。

Will say it takes a little to get use to it but once you do it's easy to use and works well

少し大きいので持ち運びするカバンを選びますが、ノートパソコンのドングル、テレワーク用のイヤホン、会議用のVGA-HDMI変換の小さいやつ（お客様のところはVGAが多いので）を同時に持ち運べます！

もっと小さくできる気がします。 鞄に入れるとかさばるため、結局使わなくなると思う。