Description The Poseidon black line mask has an extra deep and ultra-soft skirt providing a comfortable and flood resistant fit, which even works great with beards. Other masks give you the choice of low volume for easy clearance or a single lens for a greater field of vision. Poseidon’s LVSL© technology gives you the best of both worlds with easy-to-clear low volume and a single lens in one frameless package. KEY PERFORMANCE FEATURES Ultra Clear lens LVSL© Low-Volume Single-Lens technology Tilted lens Frameless Weight (g): 185