Ear plugs... Howard Leight Max Green...
For smaller ear canal... T Shape andxSoft, loads better than the cheap yellow cylinders or the hard foam cones.
Worn 'em for years... motorbike, gigs, sleeping.
It's all about the fitting... roll em squish, and put em in and hold allowing them to expand to seal, rather than expanding and pushing out.
https://www.ebay.co.uk/itm/Howard-Leight-33-011-20-Max-Lite-Ear-Plugs-Green-Uncorded-200-Pairs-/175198359357?mkcid=16&mkevt=1&_trksid=p2349624.m46890.l49286&mkrid=710-127635-2958-0