Art from @getting_salty_ a Nanaimo diver and artist.- Blades are made of high quality mixture of epoxy resin and fiberglass.- Blade dimensions ~ 80 cm long x 20 cm wide- Blade angle ~ 20 degrees.- Black rubber rails attached to the blade provide maximum efficiency in water flow redirection.- Pair of blades weighs ~ 0,8 kg (Medium stiffness).Stiffness guide:*Weight of the diver including all equipment and lead.120Lbs or bellow - Extra Soft blade stiffness.121Lbs to 155Lbs - Extra Soft or Soft blade stiffness - depending on your goals, personal preferences and physical shape.156Lbs to 200Lbs - Soft or Medium blade stiffness - depending on your goals, personal preferences and physical shape.201Lbs to 220Lbs - Medium blade stiffness.Over 220Lbs- Medium or Hard blade stiffness - depending on your goals, personal preferences and physical shape.