A2681 apple mac. What size cover?

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I like the neoprene sleeve type covers.

Buy one that is described as large enough for the MacBook Air screen size you have.

No other covers are recommended for the computer.

Graceland1960 wrote:

What size cover do I buy for my MacBook Air model 42681?

Please define "cover".

I like to use a computer backpack to "cover" the computer when traveling.

When storing the computer I cover it by placing it in a cardboard or other storage box.

Never use a keyboard or screen cover.

It would be easier to respond to your specific needs if you defined what you mean by "cover".