Product detailsErgonomic Office Chair]: Provides independent support for the head, shoulders, and waist, allowing you to relax your muscles and allow you to lean on them without getting tired after sitting for a long time.[Chair back can be reclined 90-120?]: The chair back can be reclined 90-120? to meet your leisure needs[Integrated high-density sponge filling]: High-density sponge filling cushion/seat cushion, soft, comfortable, breathable and supportive[Rotating and Lifting]: This chair can rotate 360? and lift up and down to meet people of different heights and different usage needs.[Stable Support]: The seat frame has a solid structure and stable support, ensuring you maintain comfort and stability during useChair back can be reclined 90-120?]: The chair back can be reclined 90-120? to meet your leisure needs[Integrated high-density sponge filling]: High-density sponge filling cushion/seat cushion, soft, comfortable, breathable and supportive[Rotating and Lifting]: This chair can rotate 360? and lift up and down to meet people of different heights and different usage needs.[Stable Support]: The seat frame has a solid structure and stable support, ensuring you maintain comfort and stability during use