Body length 3.5 and 4 mm.
Wingspan 10 – 15 mm.
The upper side of the forewings is pale brown with three darker spots on the wings. Both pairs of wings have fringed margins. The larva has the habit of carrying a silken tube and often attached to it are particles of wool, fibres, etc from the immediate habitat. The case is open at both ends and the larva is rarely found outside it.