RMAX Pro Select R-Matte Plus-3, 1.5 in. x 48 in. x 8 ft. R-9.6 Foam Insulation Board 637899 - The Home Depot
Foam Board Insulation 1.5 in x 2 ft x 8 ft R-7.5 GPS ProBoard
Foam sheets
6 Pcs Polyurethane Foam Sheet- 15.7 x 11.8 x 1.5 Inch Cuttable Foam Inserts for Cases- Packing Foam Pads for Toolbox Camera Storage and Crafts : Amazon.co.uk: DIY & Tools