Upavon Premium HD Foam Sheets
Hareline have discontinued these... product is running out
Upavon is one of the 2020/2021 new products from Hareline. Upavon is softer and more workable than EVA, it s is also more buoyant than EVA sheet. The appearance is a little rougher that EVA which may suit what you are tying?
Upavon comes Available in 12 colours and each pack contains 4 individual sheets at 200mm x 150mm x 2-3mm (Thickness may vary due to engineering tolerances).
Easily glued to remain permanently flexible using Liquid Fusion ( found in this store) if you want to laminate colours.