After reading great reviews about the pmx70 i chose to go with the sennheiser sport pmx80 - primarily because i liked the orange colour over the green.€€i have only used apple headphones, so this was a major improvement. The package came and at first glance, the headphones seem lighter and more nimble than you would think - it really is quite small.€€however the fit around your ears are amazing. They stay on, but do not cause discomfort by being too tight. At first you will notice how deep the earpieces go into your ears, which was a new thing - but you get used to it, and it really is better. They are a great fit, and when working out, or sprinting for that matter, these wont budge.€€as for the sound quality, it lives up to the sennheiser name. Great amount of bass, and though it isnt noise cancelling, it does a pretty good job at that. They put the apple headphones to shame in terms of sound quality.€you will not be disappointed with the sound.€€it really does glow in the dark too, and i've ran it under water to clean after work outs, and i've had no problems. Does exactly what it says it would.€the cable is pretty sturdy, and ive onli had it for a week so i cannot see any wear and tear.€€these are very stylish, and practical headphones, providing you with a comfortable, and stable fit, with great quality sound.€i would recommend to any-one looking for headphones that would stay on, athletes especially - they really are water resistant (and sweat resistant...)€great quality product that delivers all that it promises.