It looks like neon and it produces light just like neon but unlike neon, which is hard,  the glasses in the picture are flexible. They can be flexible thanks to the Lytec technology they're made of.

Live Wire is a semiconductor cable that creates a glare free beautiful light along its entire length that is cold to touch with no hot surfaces or bulbs to break. Safe and Non-Toxic , Comes in eight colors.

It was used in Major Films to create special effects. Now it is finally available to the public.

Source Live Wire