Liquitex-Super Heavy Matte Gel Medium. A super thick gel which retains high-peaks and crisp brush and knife strokes with very little shrinkage. This medium keeps paint workable longer than most other gel mediums and dries to a translucent matte finish. This package contains one 8 ounce battle of Super Heavy Matte Gel Medium. Conforms to ASTM D4236. Imported.