Saddlemen Lutzka Slim Seat327009157 Product Description Ultra Foam unique molding process creates an element resistant self skinning process that seals the foam from water and enhances the seat's durability as well as comfort. The seat combines a Gel Core interior and Ultra Foam that creates a foam that is a perfect balance of rigidity and user compliance. The Co molded Gel Core is the largest comfort advancement in motorcycle seating since the creation of the suspension.