Specified from the device, not the screen size
A laptop sleeve is a fit problem first. Specify from the real measured dimensions of the device — including its thickness and any case it stays in — rather than from a nominal screen size, which is the most common reason a first sample is rejected on this construction.
If the sleeve has to cover more than one device in a range, send the largest and smallest so the internal dimensions are set against both.
Protection versus presentation
Decide which this sleeve is. A presentational sleeve keeps a device dust-free and looks considered; a protective one has to absorb impact, which means padding and a different construction entirely.
State the requirement in the inquiry, then confirm it on a physical sample with the actual device inside — protection is not something a specification sheet demonstrates.







