Fresno Flight Center

What Latitude 64 says about the Sinus:

Sinus is a putter with three grip areas on top with different textures. This gives players an option to find the grip and feel that they prefer. The flight is quite overstable making the Sinus useful in windy conditions.

My Own Take on the Disc
Sinus is out of stock for the moment
This disc is available in Zero Hard @ $11.