**Update: Corner piece has come loose** I have a 3x3 cube and wanted to explore a 4x4 so I decided to buy this one. O expected the sides to move smoothly, but unfortunately they don't. I can best describe the cube, the cube is too tight and not springy like my 3x3. I have a 4x4 ikd cube that I was looking to replace but it doesn't look like it will do. On the light side, the colors are very bright neon that comes out in excellent colors.
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