From the description: Stitched with two strands of yarn, the subtle color variations occur when you change only one strand of color at a time.

Gauge: In pattern, 5 1/2 shells and 10 rows = 4” / 10cm

Materials:

• sportweight yarn, approximately 15.75oz / 1765yds white (MC)
• sportweight yarn, approximately 8.75oz / 980yds blue (A)
• sportweight yarn, approximately 7oz / 785yds pink (B)

Model in the book was stitched with Jamie Pompadour: White #200, Pastel Blue #206, and Pink #201.