This wooden 2 in 1 sauna hygrothermograph and sand timer set is a necessary sauna accessory for the sauna room. It helps you enjoy a more comfortable sauna. Essential sauna thermometre and hygrometre: It is very important to control the temperature and humidity of the sauna room. With the 2 in 1 sauna thermometre and hygrometre, you can measure the moisture and temperature easily and accurately.Heat-resistant glass: Featuring heat-resistant glass, the sauna hygrothergraph and the sand clock are designed to withstand the hot and steamy environment of a sauna room.15-minute sand timer: 15 minutes is a popular length of time to enjoy a sauna session. The rotating timer also includes 5 and 10 minute approximation markers for shorter sessions.Durable material: Solid pine wood is a beautiful natural material. Pine wood has a straight grain, and the knots give the material its signature, rustic look. Made of pinewood, the thermometre hygrometre and hourglass are more durable.