Finally, I think the Earfun logo is pretty cheesy compared to the refined Fiil logo, but that personal preference and you might feel differently. Not made for anything like a ladder however. Also: the advise in this book is gender neutral apart from very minor tweaks and for the ladies which is covered in a few pages. ---------------------------------------------------------------Technical Summary per BoseFrequency Response (+/-3 dB)62 Hz ? 17 kHzNominal Dispersion120° H x 50° VMaximum SPL @ 1 m103 dB (109 dB Peak)Weight7. Very strong and easy to use. I am confident this will hold our Yakima cargo holder. The size chart is not correct. I was hoping getting unisex flip flops would take care of the issue of my slightly wider feet but they didnt. These glitches took away from the cinematic experience and slowed things down a bit, so I wish the game was a little more polished. I bought this for my 7 year old son.