The Waverly 3-person outdoor traditional sauna features a shingled roof for outdoor use, front windows for extra lighting, and a 4.5 kW electric Harvia heater with lava rocks that maintains temperatures up to 170 degrees. The Waverly also has a Premium BT sound system, a sand timer, a hygrometer to measure the humidity level, and a cask and spoon for dripping water over the lava stones. A 55-inch rear bench seat provides ample room for 3.