2 year update: I replaced these sheets with cotton ones to match the color of the new quilt. Spouse slept horribly after the sheet change. Might have to switch back to these.21 month Update: I keep seeing people reporting that these (and other) bamboo sheets stain easy. My partner is on blood thinner and is in construction so I'm quite familiar with stains on the sheet. However, I soak these in hot water and oxiclean for two hours (or overnight) and wash them in hot water and none of the stains remain. I've been doing this for almost two years now and the sheets are holding up fine. Don't use bleach.I also saw that some customers experienced pilling but I haven't. My pillow cases have been washed weekly (almost 100 times) and have never pilled. I assume somethings different in the washing process. I attached a closeup of the pillowcase. While it looks course in the photo, it is still as soft as ever.19 month Update: Quit using fabric softener to better protect fabric and environment with no loss in softness. No more damage since I quit using hot water and bleach. Still wash weekly.10 month Update: Started seeing holes in the sheets from my aggressive cleaning techniques. I found that soaking overnight in OxyClean Powder worked better than bleach.8 Month Update: I have washed these sheets with bleach and hot water (not that I recommend that) every week for 8 months with no loss in strength or softness. My spouse does hard manual labor and is on blood thinners so the sheets get dirty.Addendum: I bought three sets of new sheets, all in different fabrics, all rated high.  Prices below are for Queen size.* 680 Thread Count Pima Cotton $80 from Costco, Sturdiest* Eucalyptus (Tencel Lyocell) $60 from Sams Club, Softest* These Bamboo Rayon $70 from Amazon, LightestAddendum: The replacement set is working fine with no rips. I've washed them weekly for five months (no piling) and they are as soft as new but I had to soak them overnight in oxi clean to whiten them again. Still the softest set of sheets I own (and I buy for softness).Addendum: The corner of one bottom sheet ripped after first use. However, they are so soft that I am giving them a second chance and ordered a replacement set. The replacement set was damaged in transit and returned undelivered. I ordered and received a second set that are working fine but I had a time getting Amazon to refund the charge for the nondelivered set. I have already spoken with two associates, the latter who claims I am misreading my credit card receipt.Original Review: The sheets are noticeably soft and shiny. They feel lighter and cooler for sleeping but the softness is not to the degree that you feel on satin sheets (they didn't cause the sheets, pillows, or me to slip off the bed).Because of reviews that reported tears and pilling, I washed these sheets twice before putting them on the bed. As shown in the photos, they fit the split king bed perfectly and had no tears, holes, or pilling.People are reporting them to be wrinkled. Mine did too when I forgot to use Downy Wrinkleguard fabric softener. You also need to remove them from the dryer as soon as they are dry. They also don't get overly wrinkled after sleeping on them.I put the pillow cases on two different king pillows and they were almost too small on the Viewstar Cooling Shredded Memory Foam Pillow but fit perfectly on the expensive one I bought from Sears years ago. Neither of them slipped off the pillows overnight.Ignore the review from BigPopa (and others) that says these sheets are not made from bamboo. His photo deliberately cuts off the part that says they are from bamboo.They are more expensive than many sets of sheets but I routinely buy sheets this expensive and they compare well based on feel. Others (e.g., Kirkland) are heavier and better constructed but not as soft.