We are currently in the 3rd year of production with this unique container. This container is what we consider to be the ideal container size and design for quality seedling production and optimum field performance. What makes it different from other containers are side air vents that prune the roots approximately 1/2 way down the container as well as at the bottom. In early tests-all measured as much as a 35% increased root volume. We have demonstration plantings underway to evaluate the seedling performance compared with other container types.