An apparatus and method for sexual stimulation that includes a handheld driving member and an insertive member that is tipped with an insertive sexual device that moves in response to a user’s movement of the driving member. Each vane is pivotal about an associated pivoting axis to assume different angles in relation to the central axis and, thus, to form a nozzle of variable cross-section between each pair of adjacent vanes. Pressurization of the chamber reduces the contribution made by the final anneal step to total thermal exposure by increasing the diffusion rate of the hydrogen into the materials from which the integrated circuit is fabricated. The heel opening has a perimeter defined by a stitch that limits stretching and expansion of the heel opening relative to stretching and expansion of the leg and foot portions of the compression hose.