🛋️ Elevate Your Comfort Game! D-shaped design ensures stability. Extra support for larger individuals. Crafted by a world-renowned physical therapist. Stay cool and dry during long hours. Say goodbye to slouching and hello to confidence! Extra Support Made in USA Ergonomic Design The Original McKenzie® D-Section Lumbar Roll by OPTP is a high-quality lumbar support designed for optimal back alignment and comfort. Made in the USA, it features a unique D-shaped design that rests flat against chair backs, providing extra support for larger individuals. Constructed with a removable, moisture-wicking polyester cover, this lumbar roll is trusted by professionals worldwide to improve posture and alleviate mechanical back pain.