The puzzle itself is great! It turns well and has not had any issues with catching. The colors are gorgeous. Pieces have notches into each other to prevent popping. I do not anticipate any issues with turning as long as I check alignment before starting another turn. For those familiar, it is physically larger than the Sengso 19x19 but is smaller than the Yuxin 17x17.

The case it comes in is made out of cardboard with a leather handle and has plastic holding it in place. I do wish it had foam holding it in place instead of plastic since it makes it a little difficult to get the puzzle in and out of the case.

Very good puzzle, it darfs the shengshou 19x29 also fun fact: this is more than 200 grams heavier than the Yuxin 17x17 dispite being 150mm.

I knew from other reviews and videos that this cube turned but wow, this is so much better then I expected. Solving it I had only 2 pops and they were easy to fix. It turns so smooth and doesn't even feel like it is gonna break. While it does have quite the price I'm glad it is in my collection and can be used for patterns and fun patient solves.

Overall great cube i have owned it for a while and has never popped on me.

Really cool collection item. I don't regret the purchase😊.

The quality of the cube is very poor, cubes are popped out with in 30mins of started playing. When I returned the cube they charged me 15% for the restocking fees which is huge for the cube pop out.

it took me awhile to break it in, as outer slices were hard to first turn out of the box. with dnm-37 the middle slices turn great. just have to make sure everything is aligned before twisting. only got around to 3 centers solved in this uploaded picture

This cube can surprisingly turn smoothly and faster than I expected.

I've done one solve as of right now on this 21x21, but I want to say besides its price, this puzzle is fricking cool. It's size compared to other big cubes is shorter than the YuXin 17x17, I believe it's just about 6 inches. The quality of the puzzle feels interesting, and doesn't feel too cheap, but it does have a rather square like form to it's pillowed shape. The turn quality is fantastic because of its size. However, the only problem is that you can get pop out if you aren't careful, and you can get some pieces to literally get stuck into the puzzle. I've have a few close pop outs, but the piece never came out, same for the pieces going into the puzzle, but thankfully with a small turn the piece came right out. Is this puzzle worth it? I will say you shouldn't buy it unless you are a serious collector. Financially, this puzzle is ridiculously expensive. Also, please get a mat with this if you are going to solve it on a surface beside your lap. I've seen other people using it on the table without a mat, it hurts to watch for me.