Futures Fins F6 Alpha Tri Quad Fin Set Summer Optimum weight range: 65kg -

Optimum weight range: 65kg - 80kg

however the sizes on the packaging are US

Made by Bob Cording & Jerry Humphries in 1975

short-sleeved

The quad rears are much smaller than the front fins

Futures Fins F6 Alpha Tri Quad Fin Set Summer Optimum weight range: 65kg -Dimensions Size: Medium (145lb 195lbs) (65kg 88kg) Side Fins: Height: 4. 37" Base: 4. 22" Area: 14. 22" Foil: Flat Center Fin: Height: 4. 37" Base: 4. 22" Area: 14. 22" Foil: Symmetrical Rear Fin: Height: 4. 05" Base: 3. 87" Area: 11. 76" Foil: Symmetrical Alpha Alpha fins are made with a special composite designed with the help of 3M. It's carbon and air infused, and it's super lightweight. Generation Series Construction Flat Foil Flat foiled fins