16pcs XS/S/M/L (B-NSEN) Noise Isolation Premium Eartips Adapters Compatible with Sennheiser (M2 IE) Momentum I and G CX 3.00 CX 5.00 CX 7.00BT HD1 HD1 Free and HD1 Wireless Earphones Headphones

I've had some Sennheiser in ear Momentum earphones for a few years (for when I'm out walking). I'm very happy with them but have lost the original rubber tips which has detracted from the sound quality I originally had.Ordered these and find that the large sized ones get me back to the original sound quality - it's nice to get that sound again whilst I'm out walking.