The invention relates to a material sheet comprising at least one monolayer, wherein at least one monolayer comprises a plurality of drawn unidirectional polymer fibers having a strength of greater than 1.2 GPa, characterised in that the at least one monolayer has a thickness of less than 100 [mu]m and the material sheet comprises a bonding agent of less than 13wt% relative to the total weight of the material sheet.