1. Seven Layers of Comfort o The Hybrid Pro boasts a sophisticated seven-layer design. This includes two layers of Aerocoil® springs, engineered for responsive support and weight distribution, and layers of Simbatex® foam infused with graphite for optimal cooling. https://steadyhq.com/en/josta/posts https://steadyhq.com/en/45191dfb-d8ef-4227-b7e3-cee24c522cfe/posts/6bef1d68-3bce-401e-95bf-10acc19a027c