Betagel
Betagel is a material invented in Japan that utilizes gel and silicone to absorb violent shocks.
Japanese researchers developed "Alphagel", which was principally used in the manufacture of sneakers and as a shock-absorber for tennis racquets. Betagel, a more effective formulation, was so named according to the Greek Alphabet, in which letters also serve as numerals. It is also principally used in sneakers.
The gel is also used in scientific applications.