These pillows are made of thick viscoelastic memory foam, It prevents pain and itching of the buttocks and the thighs resulting from remaining in a seated position for a long time, particularly in case of people using wheelchairs. It improves blood circulation, prevents skin irritation and limits the risk of bedsore its elasticity ensure optimal distribution of body pressure on the buttocks and the thighs, The pillow surface is adapted to the shape of the body.