Is this for zips with plastic or metal teeth?
Actually I've never had this problem although I'm have a very fat, round tummy. My problem at the moment is knickers which keep rolling down over said tummy and end up in a thick rope of rolled cotton jersey clinging around my nether régions . Even the newer ones with stronger elastic. 
Young people ‘expected’ to engage with government's new work support plans.
don't have a problem with under 16's having free bus travel,BUT
.