easily one of if not is the best eartips, one could even say better than springtips. creates a great seal around the ear canal , great foam quality doesnt make your inner ear itchy or feel discomfort at all, super comfortable and very compatible even with a relatively big nozzle of an iem, i do suggest for iem users to maybe use a spacer to make it a bit longer for a much better fit (if ur iem nozzle is pretty long) . for sound? i mean with this its apparent that its used to isolate everything else around you so it has the tendency to make bass feel smoother and just have a better feel towards them and lower down the highs/treble , tested with budget iems
i.e
kinera celest wyvern abyss
tanchjim bunny 3.5
tangzu encounter shiminli
kiwiears singolo
paired with
jcally jm10 pro dac