AUNT LYDIA’S® “Bamboo Crochet Thread,” Size 10: 4 balls each 806 Sea Glass A, 536 Lilac B, 810 Still Pool C, 621 Key Lime D.Crochet Hooks: 2.1mm [US 3] for size Small/Medium, 2.55mm [US 0] for size Large/X-Large, and 2.7mm [US 00] for size XX-Large.Yarn needle.