This chair has been tested for home use and meets the requirements for durability and safety, set forth in the following standards: EN 12520 and EN 1022.This seating furniture is tested and complies with relevant strength and durability standards. The tests simulate typical usage of the product and are based on use by persons weighing up to 110 kg.A maximum of 6 chairs can be stacked together.We recommend that the stackable furniture is lifted and moved one at a time.