Complex sentence: Dyneema and Spectra are gel spun through a spinneret to form oriented-strand synthetic fibers of UHMWPE, which have yield strengths as high as 2.4 GPa (350,000 psi) and specific gravity as low as 0.97 (for Dyneema SK75).
Split into simpler sentences: Dyneema and Spectra are lightweight high-strength oriented-strand synthetic fibers of UHMWPE formed by gel spinning through a spinneret. They have yield strengths as high as 2.4 GPa (350,000 psi) and specific gravity as low as 0.97 (for Dyneema SK75).