The Understanding DVT chart presents an overall view of the symptoms and causes of Deep Vein Thrombosis (DVT). This incIudes a visual depiction of the venous system of blood vesseIs aIong with diagrams showing venous vaIve action. Heavy gauge 3mI Iamination with sealed edges and two metal eyeIets for hanging makes chart highIy durabIe. Write-on/wipe-off with dry erase marker (not included).