Astral Buoyancy Sea Wolf PFD Full featured sea kayak PFD with Astral's attention to detail and top notch innovation. Tectonic system of separate foam panels for the upper and lower torso allow for maximum mobility in a PFD. Torso length adjustment customizes the torso length while simultaneously reducing ride-up, with front adjustment straps. Ability to shorten the torso length, combined with sculpted foam makes it a great fit for both men and women. Specially designed strobe attachment point on the back keeps the strobe from creating night blindness.