See our Support Guide for information on support & compression levels, as well as the benefits of support. For when you need a helping h&, treat hosiery drawers to the Support 70 Knee Highs from Cette. Designed to encourage the circulation of blood in your lower legs, the knee highs use an extra extra firm factor 15 support to ease aches & pains. Made from a durable 70 denier yarn, these actually have a sheerer 30 denier appearance. A must if you spend all day sitting or standing stationary!