A tessellation of striped chevrons rotating around hexads, triads and diads (p6 symmetry). Currently displaying a plain version in black on white. Other colours, sizes and orientations are available on request and you can even ask for a combination of several designs together.
The apparent glitch in the design is an artifact of Spoonflower's recompression of the image when adding the rulers. See their unglitched preview using the embed link.