The Rinex is a decent design with rounded thin edges. Good for the price They stopped working with my phone after some time. They have a feature that if you take the right one out of your ear, it pauses/stops your music in case you need to talk to someone which is pretty neat. 5mm jack snaps into the headphones preventing wear of the actual jack, to the thickness of the cable, to the fact the cable itself is replaceable, to the fact the Mic Mute/Volume controls are on the headset itself rather than a dongle in the middle of the cable (yet more potential points of failure in the cable! Update March 2019:Seasons almost over for the sled, and the lights have preformed flawlessly. These suck, very painful and cheaply made. However the fit is problematic. So if your backpack already has too much in it, these are a poor choice. I store the seeds in a metal dustbin which has defeated the mice - so far!