Shaped and angled for immediate pressure and tension on the prostate and surrounding area, Helix Syn Prostate Massager is a silicone powerhouse. It has a sharply angled stem and large bulbous head plus the redesigned P-Tab provides a more focused external prostate stimulation when massaging the perineum. In terms of dimensions, the Helix is larger at the tip and is more angled to provide a more vigorous massage. However, the mid-ridge is slightly smaller on the Helix. A water based lubricant is recommended. Always clean before and after use.