- 2020: Discs 38mm 1000 pieces
- 2021: Sheets 25x20cm 25 pieces
This product is custom manufactured to the ISO specification. (Many items currently available are inferior/non-conforming off-the-shelf foams of Polyesterurethane type, which have different hardness and chemical properties.) To ensure improved shelf life and reduce yellowing through exposure to UV radiation in daylight, it is heat-sealed in a Black UV-stable Polythene pack. Available in packs of 25 sheets and 1,000 pieces 38mm cut discs.