It really is Ethernet cable. It talks like it. It walks like it. Just does not look like it.
** Shielding of Ethernet cable is not a requirement. The twist in Ethernet cables is to principally reduce crosstalk, not reject random noise. A cable analyzer can be used to verify the usefulness of an alternative design. It is called a 'flat cable' because it looks flat. The interior design is made to reduce crosstalk, which it does well.
Granted, very long runs of this kind of cable are not recommended. Nor should it be used in areas of very high noise levels. As a patch cable of a few feet, it works up to gigabit. For 100 Mbps networking, it can be used up to about 50 feet or more.
The actual conductors are very tiny, which results in high-frequency loss. It is not for rugged use. It has to be place where there is no danger of stress.
** The manufacture claims a shielded version is valuable that is very thin. It conforms to the CAT6 standards, they say.