Each layer is approximately 1" and the finished size will be approximately 2" less than the layer count. For example, a Queen 10 Layer will be approximately 8" thick. Due to nature of cotton batting we cannot guarantee specific finished sizes and the above is a general guideline only. All cotton mattresses will compact over time and require more frequent turning, flipping and rolling to ensure even wear. They are at their softest level new and will get progressively firmer over time.