Made from the insulation material Depron (a recycled material), they snap in place and create a tight seal. Letting in practically no light (unlike the manufacturer's lid liners) these should last many seasons. They are laser cut, 100% water repellent and do not conduct heat.
Liners sold in single quantities
Perfect fit in Excluder, Super and Troyer gourds.
They would need to be trimmed to fit an S&K Big Bo gourd or Access Cap for natural gourds.