Seigaiha (青海波, "blue sea waves") is one of the oldest Japanese wave patterns: rows of overlapping fans, each made of concentric arcs, stacked so that every row sits in front of the one above it. This version is drawn with true circles and one even line weight throughout, with a tinted band between the two outer rings and a small half-sun at the heart of every wave. The tile holds exactly 8 waves across and 32 rows down, so it repeats with no seam at any size.

Seven colourways: Indigo (藍, washi-white rings on deep indigo), Vermilion (朱, vermilion on washi white), Young Bamboo (若竹, deep green on a pale bamboo ground), Yamabuki Gold (山吹, umber rings on golden yellow), Sakura (桜, rose on blossom pink), Sumi (墨, charcoal on washi white) and Luminous Blue, a modern colourway with a celery band on a cloud-white ground.

Each colourway comes as a 2048 px and a 4096 px square PNG tile (sRGB, no transparency), 14 tiles in all. The commercial licence adds an editable SVG tile for every colourway, with its colours set in one style block so you can recolour it in any vector editor.

Also included: origami paper as vector PDFs for A4 and US Letter, seven pages each, one per colourway. Every page holds one 150 mm (5.9 in) square and two 75 mm (2.95 in) squares, printed past the trim line with crop marks to cut on. The squares are full colour edge to edge, so they use plenty of ink; print at 100 % on thin paper.

At 4096 px the tile prints about 35 cm (13.7 in) across at 300 ppi. Use it as digital paper for scrapbooking and cards, for fabric and gift-wrap designs, stationery and packaging, or as a pattern fill and backdrop.