altho... theoretically...(lol uh oh, here comes Kal with his trivia again! lmao) according to my research (reading ALL of the RepCom books, all of the Legacy of the Force Books and countless hours on Wookiepedia) I have learned that typically speaking, Mando'ade wear a undersuit made of a ballistic weave. This material is lightweight and flexible like fabric and won't do much to stop projectle weapons, however... it does protect from fragmentation and energy based weapons by abosrbing and dissipating the energy across the entire suit, degrading the kinetic energy of the fragmentation or the beam of a blaster to an insignificant level.