This is an all foam composite build with an extra lightweight center core and thick, denser outer skins. Each 3 layer EPS foam blank is made in house specifically for each board order. The flex can also be changed by adding an extra balsa perimeter stringer or internal balsa sheet. The impact strength of the deck can also be strengthend with an internal glass layer if you’re a heavy footed surfer. They’re super light and super responsive but also durable. This build is meant for shortboards and small to medium surf where lightweight boards really matter.