I cant begin to say how happy I am with my purchase of this mattress topper! It truly does regulate your body temp, no cold spots, and its like sleeping on a cloud! No more sore hips and back! I cant recommend it enough. It is very thick and it stays put. We have two Twin XL and have pushed them together to make a California King I bought 2 of the twin XL and they are true to size.
They are too thick to put in my dryer to fluff. Would have to take them to a Laundry facility with the big dryers.
Know that this is REAL Sheep Wool and it does smell a bit like sheep, but not in a bad way. Once I covered them you could not detect it and it may disapate with time.
You will be more than satisfied with this purchase!