Learn how to crochet thermal coasters that don’t curl and can withstand heat with this free pattern! These coasters are quick, fun, and practical. Thanks to the thermal crochet stitch and cotton yarn, they’re ideal for protecting your surfaces. The thermal crochet stitch creates a sturdy fabric, perfect for coasters, oven mitts or pot holders. Find the free written pattern on the blog and start making your own heat resistant coasters. Each coaster measures approximately 4 inches square. Choose any color of medium worsted cotton yarn and a 6.0 mm hook. Make a set for yourself or create cute DIY gifts for family and friends!