Once I worked out which size foam tip works best and got the hang of fitting them I found the noise reduction to be very good.
The sound quality is great. Phone calls are easy to answer and seem to work fine.
Wearing them for 4 hours straight using a ride on mower and whipper snipper and they remain comfortable.
Currently I can't find any Australian local sellers for replacement ear tips. There is also the occasional loss of sound quality (as if you have moved your phone too far away) which seems to happen mysteriously despite my phone remaining stationary in my pocket. Maybe due to environmental factors such as metal fences or swinging the whipper near my phone.
Despite these few issues I'm still rating it 5 stars.
Previously I wore full cover ear muffs with no music. I switched to these in order to wear a wide brim hat and so I could take phone calls and being able to enjoy music and podcasts was the icing on the cake .