cool honeycomb gel car cushion plus-sized summer cool water cushion office students long sitting breathable cool pad

blue u-shaped + cloth cover gray u-shaped + cloth cover blue u-shaped plus-sized + cloth cover gray u-shaped plus-sized + cloth cover purple u-shaped plus-sized + cloth cover 3.5cm m cushion 4.5cm rice cushion + cloth cover plus-sized 3.5 m + cloth cover plus-sized thickened 4.8cm m + cloth cover u-shaped hip + cloth cover 28cm small round pad + cloth cover 40cm large round pad + cloth cover small lumbar support pillow + cloth cover 2.5cm m cushion

as shown in the figure