The Valle d'Aosta is a monoflap saddle with excellent support and security.   
The ultimate trail comfort and security.  Extra padding in the seat built in, knee and calf blocks support you over any obstacle the trail or arena can throw at you. The blue one is the "soft" version.

It weighs 10lbs alone, 13lbs with the
pad and inserts. The panels of a 17"
are 21.5", an 18" is 23".