The YoYoFactory FAST 201 is the world"s first adjustable yo-yo! FAST stands for Fully Active Starburst Technology, and the FAST 201 takes you from beginner to pro in three easy steps. 1. Beginner setting: Tighten the yo-yo halves and align the slots. This is the maximum response setting for easy wind ups and basic up and down play. 2. Advanced setting: Un-twist the halves and misalign the slots. This allows for spinning tricks and snap-back-to the hand response. 3. Pro Setting: Un-twist the halves a little more for super-long spins for maximum trick play! Other features include:Stainless steel ball bearing;Adjustable gap;Butterfly shape;Take-apart design;Tough polycarbonate body. - 5 ouncesManufacturer Recomended Age: 10 years and up