side closure sleeve for T440p?

[CompanyChoam]

Does anyone have a recommendation for a laptop sleeve for a T440p? Specifically, a sleeve that opens along the narrower side and allows you to slip the laptop in and out if it were in a backpack without removing the sleeve (so "portrait" rather than "landscape")

I have a T440p with a 9 cell battery, every sleeve I've looked at on Amazon seems to be for 14" Chromebooks which seem to be pretty uniform in comparison and aren't nearly as thick as the t440p.