if your'e riding more gnarly stuff that requires a lowered saddle then they make sense,
hold the button push the saddle down with your weight than return to stand over height, Once you've finished the gnarly stuff hold the button and your saddle returns, brilliant but pricey bit of kit!
Used my friends giant 140mm fully to ride some xc and downhill tracks on the same day, on a bike like that they make a lot of sense!
if your'e riding more gnarly stuff that requires a lowered saddle then they make sense,
hold the button push the saddle down with your weight than return to stand over height, Once you've finished the gnarly stuff hold the button and your saddle returns, brilliant but pricey bit of kit!
Used my friends giant 140mm fully to ride some xc and downhill tracks on the same day, on a bike like that they make a lot of sense!