At 85 grams/set, these solid bamboo runners weigh in almost at half the weight of solid glass.  They are carefully foiled and then finished with a thin layer of fiberglass.  These puppies will be fragile and aren't for everybody, but the discriminating devotee will find excellent craftsmanship as well as the luster of the fastest growing woody plant in the world.

front fins:
base: 5.31" / 131 mm
height: 2.75" / 71 mm

back fins:
base: 4.75" / 121 mm
height: 2.31" / 59 mm

85 grams / set of 4