We have prototyped a multi-finger haptic system that makes it possible to present a virtual object that applies attractive force to three fingers and the palm of the right hand, and evaluated the user's perception of the size and shape of an object. It was suggested from the results of a size experiment that the size perception can be conveyed more accurately by grasping the virtual object along with force feedback applied to the palm. We found from the results of a shape experiment that attractive force is mainly effective in the perception of tapering or curvature.