Low Density Polyethylene (LDPE) is a low density plastic that is very flexible and translucent. It is widely used for dispensing bottles, wash bottles, squeeze bottles and container lids.
It’s properties include:
it is translucent to opaque
robust enough to be almost unbreakable
chemically stable at room temperature
LDPE is widely available in a ‘natural’ colour, but black is recommended for improved durability in direct sunlight or outdoor exposure.