I purchased this mattress to replace my king size water bed mattress do to my husband and I having back problems. Not only did the mattress arrive within two days of ordering but the mattress was easy to set up. It took less them ten minutes to set up and only twenty minutes to deflate totally. This is the best mattress I ever own and last night my husband and I slept without even getting up once, when we awoke the next day we both felt great and refresh , no aches and pains from a restless night. I highly recommend this mattress to everyone who wants a good night rest, this mattress also is very soft and durable. Thanks again Overstock.Com for allowing my husband and I to rest peacefully as well as pain free. Your shipping is great, items great, and your customer services personal is outstanding. I will be back for many more purchases of various items from Overstock.com. Happy sleepers in Michigan.