The nesting box is made of solid multiplex plywood 12mm and is covered with red bitumen roofing felt - filling material: small animal litter and upholstery wool. The bumblebee insect hotel has a hinged roof, a closable entrance, tube passage to the nest and air holes on the sides. The bumble bee brood box has a wax moth flap at the entrance to protect the bumble bee nest from the larvae of the wax moth. Bumblebees are peaceful beneficial insects that start pollinating the ornamental and useful plants in your garden very early in the year.