Are there any parameters that should be considered when selecting the yarn for crochet wearables? Yes definitely there are. If you are following any pattern, then it gives details about the yarn to be used. It is not possible to use the exact yarn. But go for an alternative that is similar to the recommended yarn as much as possible. Check for the weight (thickness) and composition. Yarn thickness: If you're following a particular pattern, then this is the first thing to look for. Yarn is available in many thicknesses ranging from thread to super bulky. So if pattern calls for worsted weight yarn, you should always use worsted weight yarn. If you use thinner or thicker yarn, it will change the size and the fabric texture or drape of the finished garment. In general, worsted and bulky yarns are used for warm and cozy winter garments and lightweight yarns are used for summers. If you want to use worsted weight yarn for summers, you can use a larger hook to create airy fabric o...