Zen 1 Solitär is available in three versions - felt with wool, felt with core yarn, felt with wool and silk in coordinationg colours – and 14 sizes.
Zen 2 Solitär, two felt colours combined in a chequered pattern, is available in two versions – felt with wool and felt with core yarn – and 14 colours.
Zen 3 Solitär and Zen 4 Solitär are available in three versions - felt with wool, felt with core yarn, felt with wool and silk in coordinationg colours – and in twelve and seven sizes respectively.