There is described an apparatus for installation on a hand having a thumb and opposable fingers, both having joints and phalanges. The apparatus comprises biasing devices. Each one of the biasing devices substantially has an inversed V shape formed by a hinge, a distal end and a proximal end. The biasing devices are connected together to form the apparatus. The hinges of the biasing devices are spatially distributed so that each hinge covers a corresponding one of the joints and biases the distal end and proximal end toward each other. The apparatus keeps the hand in a substantially closed position to assist in gripping objects.