KCNC Ti Pro Lite Seatpost - 31.6mm
Ti bolts to hold seat in place.
265mm of usable length.
VERY light seatpost. Originally made for XC, but I've used it on my downhill bike for nearly a year and haven't had ANY problems at all. Has been cut down a little, but still loads of room.
This post is EXTREMELY light.... the clamping system is very minimalistic and has Ti bolts holding it in place. Did you know for each Ti bolts on your bike, it makes you 1 second quicker over a minute...? 
This seat post is FAR lighter than a Thomson.
KCNC Ti Pro Lite - 31.6x350mm = 165g
Thomson Elite - 330mm = 228g
Saving of 63 grams over a Thomson!
Thomson don't specify a size either.... for all you know it could be the smallest diameter they have.
These cost £81.99 new, so i'd like £40 please.
