These are great products, my 11 yr old son loves them. For beginners (kids) is excellent. These are two yo-yos i had as a kid.
Very disappointed in the products. Fell apart after only using it a handful of times. All three yo-yo have issues and unbalanced.
Polyester is the perfect in between for yoyo strings. Boutique strings are the only thing that enticed me away from these yet i still find them amazing when i go back to them. These are much more durable feeling and seem like they fray less.