Jasper Morrison has added a new option to the HAL chair family: the HAL Armchair. Based on the HAL seat shell, he developed an organic one-piece shell that takes on a distinctive look of its own with the curved armrests 'growing' out from the sides – while still bearing a clear family resemblance to the rest of the line. The shell construction responds to the physical forces operating on the seat and provides maximum stability and superb comfort with a minimum amount of material. This comfort is enhanced even further in the versions with a seat cushion. For the base, there is a choice of four-legged bases in tubular steel or wood as well as a five-star base on castors. Thanks to the openings under the armrests, HAL Armchairs with a tubular steel base can be stacked (but only in the version without a seat cushion).