I'm wary of them as I've read about weight limit on posts being around 17st (not that I'm anywhere near that but it's worrying to me), as for saddles er dunno
I've been considering the Merek carbon ones on ebay ... and those state max rider weight is 120 kg.
..... but that can be quite meaningless if used on a mountain bike as say a 60 kg kiddie dropping off a 3 ft wall and landing on saddle would generate as much if not more force* as a 120 kg fattie sitting on it.
if it is same as this, then I hope you didn't pay more than £ 110 ... and it is 120 g, so quite heavy foir a Carbon saddle; 95 g-ish is more or the norm, but then it does have a part leather covering.
Gotta love a flite and I can get the re issue ones cheap at work
Used a few of the original 125g slr ones but broke a couple of rails , so they are kicking about in a box . The hollow rails are filled with a sand like grain , I suspect so they can be bent to shape without kinking . Funnily the grainy stuff adds about 5g