A container assembly having a container, a fitment and a cap assembly. Other embodiments are disclosed. The first ends of the two seating sections are arranged next to one another and the second ends can be detachably fastened to the backrest. Therefore, a nonvolatile memory capable of miniaturization can be provided. The first retractor blade is slid down the first rod and the second retractor blade is slid down the second rod to be positioned and separate the anatomical structures.