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mf8 Son-Mum Cube mf8 Son-Mum Cube mf8 Son-Mum Cube
mf8 Son-Mum Cube mf8 Son-Mum Cube mf8 Son-Mum Cube
mf8 Son-Mum Cube
mf8 Son-Mum Cube
mf8 Son-Mum Cube

mf8 Son-Mum 3x3 V1


  • $44.99




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Product Description

The mf8 Son-Mum Cube is a 3x3 mixup cube designed by Mike Ambrust and produced by mf8. It features an outer 3x3 with a smaller 3x3 located on each center. As with most mixup style cubes, it is possible to scramble the inner 3x3 along with the outer 3x3 at certain irregular points, which allows the puzzle to be scrambled in some unconventional ways. It features both the Mike Ambrust and official mf8 logo.

Easy Returns!

Not completely satisfied with this product? We accept returns within 4 weeks (28 days) past the delivery date, for either store credit, or a full refund to the payment method — the choice is yours.

Click to see exclusions and more details on our returns policy

Our Promise to You

All of our products are guaranteed to be free of defects, or we will replace and reship at no cost to you. Please contact us within 4 weeks (28 days) past the delivery date to report any issues with items you have purchased.

Please note that some new cubes when being used for the first few times may experience what is termed a "pop". This is when one or more parts of a puzzle pop out without any damage actually being done to any of the pieces. This also occurs from time to time during normal usage. Pops are typically not considered a defect if the parts which come off can be reassembled by hand.

The corners on 2x2 puzzles should not be twisted as doing so may snap the piece. Damage caused by corner twisting is not considered to be a defect.

Fast & Free Shipping Available!

  • Free standard U.S. shipping (includes Hawaii, Alaska, and AFO/APO) (2-5 business days) is offered for orders with a subtotal of $55.00+. Free expedited shipping (1-3 business days) is offered at $85.00+.
  • All orders are shipped from our New York warehouse.
  • Orders are shipped the same business day they are placed, or the next business day. The cutoff for same day shipping is 3PM EST.
  • There is no processing/handling surcharge — all our shipping rates are at rock-bottom.
For our customers outside the U.S.:
  • We ship to all countries not sanctioned by the U.S. government.
  • We advise that you look into your country's customs laws before ordering.

Click to learn more about our shipping methods

Product Specifications
Manufacturer mf8
Type Shape Mods
Added 2018-10-14
Gross Weight 200g

Customer Reviews

Based on 4 reviews
Great Challenge

I got the stickerless version of this for my bday, and it is awesome. It is very challenging, but satisfying to solve. It is rather stiff, but that is unavoidable with a puzzle as complex as it is. Also, it rarely pops if you are careful, but when it does, it is pretty hard to get back together. The stickerless color scheme is great, but it is definitely not a speed cubing puzzle.

Jack C. (New Zealand)
Very tight

When I first got the cube it was so tight I could barely turn it. After loosening it, it turned out to be a great cube. I love the ingenuity of the puzzle

Robert G. (United States)
A good challenge but not as challenging as I had hoped

Cube turns great. Was hoping it was going to be more of a challenge but it is what it is. Just means I'll have to get an upscaled version of it. Started out just a little bit stiff but quickly became easy and fluid on the turning.

Junk C. (United States)

I have never solved a puzzle like this before but I am always up for something new. What a great challenge and a wonderful piece for the collection.