press-on cover
nounUK /ˈprɛs ɒn ˈkʌvə/
US /ˈprɛs ɑːn ˈkʌvər/
A cover that you push down to make it stay on.
She put a press-on cover on the jar to keep the cookies fresh.
OTHER MEANINGS
2. A book cover that is pressed onto the pages without glue.
The notebook had a bright press-on cover.
3. A protective sheet you press onto a screen or surface.
He added a press-on cover to his tablet screen.
4. A removable top that clicks into place by pressing.
The press-on cover kept the paint from drying out.