From the website:

We’ve combined two shades of soft, shiny Shimmer for this easy-to-wear vest. Pattern is written for a wide range of sizes using the hairpin lace technique. See our (youtube) video to learn how, or as a refresher.

Other tools and supplies needed:

Susan Bates® Adjustable Hairpin Lace Loom set to 4” (10 cm)

Sewing needle and matching thread, one 11⁄8” (28 mm) shank button, yarn needle.

Skill level: Intermediate.

GAUGE:

One strip with edging (before assembly) measures 5½ (5½, 5½, 5½, 6, 6)” (14 (14, 14, 14, 15, 15) cm) wide; 16 rows = 4” (10 cm) in single crochet; 12 sts = 4” in double crochet.

Sizes:

Directions are written for size Small with changes for sizes Medium, Large, X-Large, XX-Large, and XXX-Large in parentheses.

Finished Measurements Bust: 36 (40, 44, 48, 52, 56)” (91.5 (101.5, 112, 122, 132, 142) cm).

Length: 23” (58.5 cm)

Yarn Requirements:

RED HEART® Shimmer®: 2 (3, 3, 3, 4, 4) balls 1929 1503 Turquoise A, 2 (2, 3, 3, 3, 4) balls 1945 Peacock B

Alias: LW3311

Also available on the Red Heart United Kingdom and Red Heart Deutschland websites.

On Red Heart North America site, pattern is in US crochet terms. On Red Heart United Kingdom site, pattern is in UK crochet terms.