Egg sitter

"Special flex support cushion supports your backside and spine so well, you can sit on an egg without breaking it – no other seat cushions for chairs can make that promise!
Unlike your memory foam desk chair, sciatic nerve pillow, or foam cushion, Egg Sitter’s unique flex-grip honeycomb design allows air to circulate and stays cools to the touch
Strong and durable, Egg Sitter retains its shape, making it a great back pain seat and orthopedic seat
Fits most chairs for deep seat pressure relief – Egg Sitter measures 15-inches X 16.5-inches
Includes 1 Egg Sitter seat cushion and non-slip cover"