No turn mattresses are designed with a single sleeping side so that, as the name suggests, there is no need to flip your mattress on a regular basis as with traditional mattresses. The benefit of this, aside from the fact they are longer lasting due to the design, is that if you struggle to lift heavy objects you don't have to flip your mattress and, unlike a standard mattress, if you don't flip a no turn mattress your sleep won't suffer as a result.