More Valentine's Day Ideas — And the best part is you can make these to give away as Valentine's day gifts! Yarn: 55% Cotton, 45% Polyacrylic, 160m in 50g ( or 330m in 50g), 5 ply and crochet hook Crochet Hook size 2mm or 2.25mm (#4 or #2 US standards). I used: 100% cotton yarn, 169 meters in 50 grams, and 1.3 mm or 2.0 mm hook. Tutorial 87 #elenarugalstudio #crochethearts