for climbing/ running / jumping around. same issue as with the first, but this time Im now out of the returns window. The bikes are easy to put on and take off the stand. No other cons that I have found; other than the defect in the first unit (the replacement unit had no defect). Very confortable! I also had some other issues that I will include in my summary:Pros:- Excellent build quality- Stylish design- Seemingly high quality built-in DAC- Reasonably comfortableCons:- Ear-piercing resonances at the high end make listening to some tracks unbearable- No EQ outside of in-app listening to local files- Carry case the size of 4 stacked dinner plates- Sub-par ANC compared to Sony and BoseI have just returned these and will instead buy a new pair of wired studio/audiophile headphones and accept "Heavy Duty" is not an exaggeration - the rack holds a great amount of weight, even on the top shelf. The headsets have a 3-pin male XLR for the microphone and a 3 1/3" TRS jack for the headphones. I will say the first pair I got had issues with the right bud connecting but I asked for a new pair and it was there before could even send the old ones back. I luv these shoes.