The Thin Medium Ergo Triangle

This patented design is slightly thinner, lighter and less firm than the Medium Ergo Triangle. If you are looking to promote proper posture with a wider base and softer seat, this one is for you! As with all our ergonomic triangles, it supports the body to sit on the pelvis, rather than the thighs, but with less height than the Medium Ergo Triangle. Sitting in this position lessens spinal compression and permits your body to sit in comfort over extended periods of time. This cushion has a slightly wider base of support and is great for softer chairs and benches and is a must-have for theatre and sporting events! It can promote proper exercise and yoga positions and will allow you to sit with more comfort and lessen fatigue. Made in the USA.



  • Supports the pelvis and allows the legs to rest in a more neutral position
  • 10" x 14.5" 
  • 1.75" thick
  • Dimensionally stable fabric engineered for versatility and durability. Plain poplin finish made of polyester.