An orthosis comprising: a foot plate ; and a first strut connected to the foot plate , wherein at least either the foot plate or the first strut contains three or more fiber reinforced layers, characterized by the fiber reinforced layers comprising a first bidirectional fiber reinforced layer having fibers with first bidirectional fiber orientation angles relative to a reference axis , a second bidirectional fiber reinforced layer having fibers with second bidirectional fiber orientation angles relative to the reference axis , and a third bidirectional fiber reinforced layer having fibers with third bidirectional fiber orientation angles relative to the reference axis , the first, second, and third bidirectional fiber orientation angles being different from each other with regard to thereference axis and at least one bidirectional fiber reinforced layer having fiber orientation angles relative to the reference axis not being evenly divisible by 15°, and wherein the first, second and third bidirectional fiber reinforced layers are part of a cured laminate. a foot plate ; and a first strut connected to the foot plate , wherein at least either the foot plate or the first strut contains three or more fiber reinforced layers, characterized by the fiber reinforced layers comprising a first bidirectional fiber reinforced layer having fibers with first bidirectional fiber orientation angles relative to a reference axis , a second bidirectional fiber reinforced layer having fibers with second bidirectional fiber orientation angles relative to the reference axis , and a third bidirectional fiber reinforced layer having fibers with third bidirectional fiber orientation angles relative to the reference axis , the first, second, and third bidirectional fiber orientation angles being different from each other with regard to thereference axis and at least one bidirectional fiber reinforced layer having fiber orientation angles relative to the reference axis not being evenly divisible by 15°, and wherein the first, second and third bidirectional fiber reinforced layers are part of a cured laminate. wherein at least either the foot plate or the first strut contains three or more fiber reinforced layers, characterized by the fiber reinforced layers comprising a first bidirectional fiber reinforced layer having fibers with first bidirectional fiber orientation angles relative to a reference axis , a second bidirectional fiber reinforced layer having fibers with second bidirectional fiber orientation angles relative to the reference axis , and a third bidirectional fiber reinforced layer having fibers with third bidirectional fiber orientation angles relative to the reference axis , the first, second, and third bidirectional fiber orientation angles being different from each other with regard to thereference axis and at least one bidirectional fiber reinforced layer having fiber orientation angles relative to the reference axis not being evenly divisible by 15°, and wherein the first, second and third bidirectional fiber reinforced layers are part of a cured laminate. the first, second, and third bidirectional fiber orientation angles being different from each other with regard to thereference axis and at least one bidirectional fiber reinforced layer having fiber orientation angles relative to the reference axis not being evenly divisible by 15°, and wherein the first, second and third bidirectional fiber reinforced layers are part of a cured laminate. <EOS>