E·A·R Express Blue-Grip Pod PlugsUnique plugs provide reliable, broad-frequency attenuation. Convenient grips minimize the potential for hand-to-ear dirt, bacteria and germ contamination. Slow-recovery PVC foam gradually expands to create a snug sound barrier within your ear. Push-in pod design makes them uncommonly easy to insert and remove. Corded/Cordless: Cordless; Shape: Pod; Material(s): Molded Foam/Plastic.