the unify combo seat is really the simplest form of seating you could hope for with no hassle adjusting angles and offset just drop it in and off you go an alloy inner core provides strength then has the plastic injected around it to form an incredibly strong one piece post and seat base the unify is beautiful in its simplicity and is available with thick padding with a durable hard wearing top cover material100 nylon with inner 6061 t6 alloy centre post and cordura top coversize25 4mm seat postcolorsblackfeaturespatented design for eclat slim or fat padding options seat combo designed for riders running low seats unique seat support structure concept slick embossed eclat design overall larger seat base shape for better supportweightslim 255g 9oz 0 56lbs fat 328g 11 57oz 0 72lbs