This baby sofa is made of high grade plush cotton, filled with PP cotton, skin-friendly, comfortable to the touch, full and anti-extrusion. These sofa support seat cover is for learning. This baby sofa seats heighten two front holes of baby sofa to make baby’s legs and body more free. This baby learn to sit chair increase the height of back can help support baby’s back and protect their spine, so they can sit more comfortable. Chair back have suitable radian which match with our back design.