THERMAL INSULATING SHEET, SHEET FOR USE IN TRUCK BED, AND THERMAL INSULATING CASE

To provide a thermal insulating sheet, a sheet for use in a truck bed, and a thermal insulating case having superior easiness to handle while having a high thermal insulation ability. A thermal insulating sheet comprises a laminated member comprising a tarpaulin sheet a plurality of synthetic resin nonwoven fabric sheets and polyester canvas laminated in this order, wherein at least the tarpaulin sheet and the polyester canvas are fuse-bonded along at least part of a perimeter of the laminated member, and the laminated member is stitched together along a remaining part of the perimeter of the laminated members. A through hole is formed in the polyester canvas