Improving the Buzz Series is a difficult task, but one that we devote a huge amount of resources to. We've added our patented SharkNose, increased cells, used double 3D shaping, and a new arc. These additions give a .5 increase in L/D, a cleaner top surface, and overall better handling, stability, and sail cohesion compared to the Z4. Enjoy the video for more info from the designers, and visit the product page for full details:
http://flyozone.com/paraglider....s/en/products/glider