Material to the Finnish spruce, inside and out are smooth, uniform color.Good quality, low price. The feature of wooden buckets:1.Compact2.Easy to carry / transfer,3.Good looks, suitable for luxurious VIP rooms andfamilies.4.Material:Finnish spruce5.Inside and out are smooth6.Uniform color7.It can well protect the sauna lights, but does not block the light Have for you, please contact us.