Concepto Concepto is a collection of tumblers available in two shapes: high with a capacity of 31 cl and low with a capacity of 25 cl. Designed for everyday use, these beautiful round tumblers will look great on any table. They are perfect for serving water or fruit juices. The glasses can be stacked for optimal storage in narrow kitchen cupboards. To make everyday life easier, the Concepto range is dishwasher safe.