The Monster iSport Immersion headphones have an unusual design, with a curved crescent of rubberised plastic that tucks in the fold of your ear and helps to keep the eartips secure. Visit Group test: what are the best headphones?

And this design is extremely effective. Both the stick-on crescents and the eartips come in an excellent range of sizes, and with trial and error we were able to enjoy a superb fit: throughout a long and bumpy run they held firmly on to the old lugholes. The headphones are robust and even washable, and the cable is flat to prevent tangles. See also Pioneer SE-CL331-H review.

Less pleasingly, sound quality was a bit of an issue, particularly for bass-heavy music. The disco track in our testing playlist sounded like it was coming out of a teenager’s mobile phone: weedy, tinny and totally lacking in bass punch.

Performance with other types of music was a bit better, if lacking in richness. And the quality of fit did help when it came to sound isolation.

Monster iSport Immersion review

They may look peculiar, but this unusual design helps ensure a superb, secure fit.

There’s a remote built into the headphones, with volume controls and play/pause plus a microphone for hands-free calling.

Monster iSport Immersion: Specs

  • Waterproof
  • 21 x 15 x 05 mm, 454g
  • Waterproof
  • 21 x 15 x 05 mm, 454g

OUR VERDICT

The iSport headphones fit well and didn’t fall out throughout testing; they also look great and have the build quality to stand up to rigorous workouts. But the sound quality, among the most important parts of our testing, was a disappointment. Audiophiles need not apply – although if you’re more interested in comfort and a secure fit than the ability to batter you with house tunes, these are a decent pick.

Find the best price