The product description
says "perfect for beginner ... and stress free travel".
I learned to knit on resin/plastic/acrylic needles (not sure exactly what they were but is was something like that) and they were a little flexible. I think they were good for learning, but it wasn't long before I began trying out other materials, looking for something different.
I might toss a set of tips into my next order, though, because I'm curious and I don't think there is such a thing as "too many needles".
However, if they are anything like my starter needles, I don't think they will replace my other Options.