Strap into the most comfortable snowboard binding ever developed. The Union Ultra provides a flexible and cushioned ride feel like you&';ve never experienced before. Each component of the Ultra acts as a suspension system for your snowboard boots, loading and unloading with each movement as you ride. Welcome to the future of snowboard binding design. Intermediate / Advanced All Mountain Flex: Medium Tool-less Strap Adjustment Mini Disk: 2x4 and Channel Compatible