High quality Foam board both sided laminated with pvc to make strong... its bendable foam board very easy to use for making rc planes jets etc you can make your own rc plane rc jet with it.for more info contact us.It's water proof. Depron foam board is a brand name for Extruded Polystyrene (XPS) closed cell foam in sheet form, it is a fantastic medium for building model aircraft rc plane , as well as model boats and prototype design.XPS foam is stronger than traditional EPS Themocoland can be futher strengthened with carbon fiber or wood strips.Its laminated with strong pvc material on both sided.(Kindly note its not kagaz ordinary paper pasted foam board) Its light and strong just 200 gram weight for 4x2 feet sheets Strength to weight ratio and rigidity is perfect for RC airplanesEasy to cut with precision by knife Easily sandable Sheets are flatand have a smooth finish.Technical Specification:Color : whiteLenght: 1220mm (48inches)4x2 feetWeight sheet :200gram onlyWide. : 600mmThikness: 5mmNote if u need sample we can provide free. For deliver these are very big size sheets. courior companies charge its shipping by volumetrically(measurement).also have specail handling so its shipping charges are different than other items.