Shuyun Tang, founder of Original Throw, and his friends have worked with factories to make the “perfect” yo-yo strings which could handle all styles. They sent sample strings to over 100 players all over China and after 9 prototypes they believe they've created the perfect strings!
OT Fat (26 Threads) has the same soft feel as Normal with some added thickness and weight. Great for slack tricks and offers the most satisfying tight binds.