Crochet, Free Crochet Patterns, Kitchen & Bath Bobble Heart Potholder – Free Crochet Pattern Crochet a sturdy, double-layered cotton potholder in a fun, bright bobble heart design! This project features the bobble stitch and includes a free crochet pattern and step-by-step photo-tutorial. bobble, bobble stitch, cotton, crochet, heart, home, kitchen, potholder