Random Riddle: A Hold-up

I’ve many holes, but I will never leak
Not comfortable? Just give me a tweak

Though often together, most of the day
Come bedtime we’ll go our separate ways

Life without me might be kind of a drag
‘Cause when I’m not around, things tend to sag

Doing my job, your reliable mate
This is a “hold-up” you’ll appreciate

 

Random Riddle: A Hold-up