My wife and I got a set of these when we ordered our Puffy Lux mattress and we love the sheets. These are, by far, some of the nicer bamboo sheets that I have ever used. They are silky smooth and very soft. After a few washes, they still have that smooth and soft texture. The stitching seems very nice and clean, while holding up to any tugging or stretching. The corner elastic straps are a good feature to keep the fitted sheet on a larger mattress (like a Puffy hybrid mattress!). Lastly, the pillowcases are just as silky and smooth as the sheets, but have a nice design to keep the pillow in place and hide any unsightly tags. The sheets have a cooling feel to them and nice, neutral colors.
The only issues I see are very, very minor: the sheets hold a lot of wrinkles after storing them (folded, in a cedar lined drawer) and they relax to the point of being saggy. The sagginess is definitely the bigger issue, since no amount of readjusting the corners seems to help. While its not saggy to the point of getting snagged in them at night, it is noticeable and the bunching isn't ideal.
If I could, I would give 4.5 stars for the minor issues, but overall nice sheets. I do recommend these and think they work very well with the Puffy mattress.