Lids are listed separately - A Lid is a useful addition especially if you work in a shared space and may like to protect the sand from being contaminated or the sand being "shared" with the rest of the room.
The first Octagonal lid was made because a colleague had to make sure her house rabbit did not use the tray for his own unfinished business between sessions.
CIRCULAR TRAY small 50 dia. blue insides
Dimensions: 500mm diameter, 100mm high
Made of light Ash ply.
The Ash ply makes this tray surprisingly light weight, with stunning subtle markings on its sides.This tray shape has at times been refered to as the "safe world shape". I suppose this is possibly why I sold my first one of these to a therapist working in the Manchester area after the incident at the Ariana Grande Concert. The second went to the therapists helping the survivors of the Grenfell Tower disaster.