Hand tufting is a hallmark of a high-quality mattress. It is a method of securing the layers by inserting a lace from top to bottom while the mattress is under compression. Tufting keeps the layers in place and prevents shifting that can ultimately lead to sagging. It makes for a durable, long-lasting mattress also provides the sleeper with an even, more comfortable sleeping surface. A queen size Saatva HD has 16 hand tufts.