Massi Piffaretti endorsed, quality materials, built for progressive riding and nothing else! Completely constructed with seriously stretchy and soft neoprene. ProFit 2 side super stretch panels. Lower cinch belt to stop the vest from riding. Duel layer neoprene construction. Feather weight foam, the softest and lightest we can find. Reduced individual foam panel segments. YKK locker zipper with silicon dipped pull string.