The outer layers turn just fine but the inner layers are not that smooth ( very catchy! ) but it's still a good stickerless cube for this price. MF4s might be a better choice?.

good 4x4, good value for money. I enjoy it, im not a speedsolver though.
inner layers are indeed stiffer than outer layers.

Like you would find in other reviews, this cube has excellent outer layers but very crunchy inner layers. Other than that it it is a really nice cube, however if you are looking for a sticker-less 4x4x4 I would strongly recommend the Moyu Aosu.

Outside layers are super smooth but i cant say the same about the inside layers... anyway, is a good 4x4 y really like the colors of the CycloneBoys cubes :)

Outside layers are super smooth. Inside layers feel a little clunky out of the box and have a tendency to catch a little, but not so much as to lock the cube up. All in all, I think this is a great cube, but someone who intends to speed solve may feel differently. I am extremely satisfied.