1. What does YPP mean?
YPP indicates Yards per Pound. It gives you an estimated idea of how many yards you will get for your purchase. It also gives you the information of how thick the yarn will be. If you are looking for heavier / thick yarn, go with the low number. The thicker the yarn, the lower the number will be. If you are looking for thin yarn, go with a high number. The higher the number, the thinner the yarn will be.
2. Please note, the yarn yardage, suitable needle size/crochet hook size and the yarn weight that included in my description are all estimation. They are rough guidelines to help making selection decisions for your projects.
3. The estimation is based on the STANDARD YARN WEIGHT SYSTEM. It might be different from the system that you are using. Please email me if you have any questions.