With a fill capacity ranging from 3ml to 390ml, tube samples offer a wide range of options for both promotional and full size retail products. Tubes are plastic, with options of various cap formats (screw-on, flip top, metal overshell, two piece, or even specialty caps). Tubes can also be produced and filled with a high-speed, automated process.  For high viscosity formulas, airless tubes are equipped with a valve system to evacuate thicker formulas.