Source
From the update:
Designed for use with 28mm miniatures (although it would work for smaller or larger scale as well), this bridge set is comprised of 5 pieces of solid, nearly transparent, resin and measures 14.5 inches long when assembled.
The Crystal Bridge will be available in the same 6 colors of clear resin as our Crystal Skulls: Blue (pictured), Clear, Green, Purple, Red, Yellow, and also a nifty "snow feature" where it will be cast with a white bottom to the approach ramps and center support to give it that truly natural, organic feel.