A tessellation of Erlenmeyer conical flasks in symmetry group p2mg. With this flat-edged stripe design, an alternative arrangement, in symmetry group c2mm, is also possible. The minimum map colouring for either is 2 - which doubles the size of the p2mg unit cell. Currently displaying simple empty flasks with uncalibrated scale markings. Other colours, stylings, sizes and orientations are available on request and you can even ask for a combination of several designs together.