The DynaVap Captive Cap was designed for the VapCap M 2020 but will fit any VapCap. This cap features a stay-in-place shape to stay firmly on your VapCap, reducing the chance of spills, and has an improved airflow distribution and freer movement for a nice even heating. The improved tactile feel of the indicator clicks also makes it easier to tell if your VapCap is ready to puff or ready to re-heat.