Being a G-Project product - the build quality is great and the material feels soft and smooth. The internal design feels good especially the squeeze in the middle. Good vacuum too and keeps lube well. But the "neck" of the "bottle" design is a bit thin and has a hard time gripping on your penis by itself; especially since the body of the "bottle" is quite hefty - I find that it's easy to accidentally dislodge yourself when you pull back to the "neck" part of this "bottle" design. Other than that minor inconvenience - this is a really solid onahole with a fun design.
Very tight and very smooth, id recommend a lube that will last longer as since its tight it will dry out the lube quick