(idiomatic) To relax or feel secure about something.
You can breathe easy knowing that your savings account is insured against loss.
Wiktionary
Breathe-easy Sentence Examples
As we can see from above, some of the eclipses have passed and some are yet to come, but no one should breathe easy.
You may want to forgo that 80s staple look which paired jellies with ruffled socks, but your feet can still breathe easy in a pair of these casual shoes.
The Breathe Easy Bra mixes organic cotton and lycra into a cute hot yoga top for women.