RooYo (1)
Manufacturer Roo-Yo
Release date 2005
Shape Butterfly
Color Various
Weight 66 grams
Dimensions Diameter: 55mm
Width: 44mm
Material Aluminum
Bearing size Size C KonKave
Response system Roo-Yo S.I.D.R.O.M.S. (Sistema Innovativo Di Ritorno O-ring Micro Siliconici)

Upon first glance of the Roo-Yo, you'll notice the distinctive "dimple" patterns on the outside halves of the yo-yo, meant for improved aerodynamics. However, the beauty comes from what's on the inside. The yo-yo features the unique S.I.D.R.O.M.S response system - four small silicone O-rings that you control to determine the responsiveness, by pushing them in or pulling them outwards. Moreover, the Roo-Yo features Dif-e-Yo's patented KonKave bearing. It combines Italian styling with advanced yo-yo technology.

The S.I.D.R.O.M.S. was originally produced by accident, when the machinist misunderstood Niubi's description of an o-ring response system. However, it was realized that the S.I.D.R.O.M.S allowed for even greater customization than with traditional o-rings, so the design was kept for the production run. 


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