The rear seat is equipped with headrests that can be adjusted in height.
To do this, press the latch and pull the head restraint up until it locks (you will hear a click). To lower the head restraint, press the latch and push the head restraint legs until it locks.
If necessary, the headrest can be removed. The backrest can be folded completely or in parts.
To fold the rear seat back, pull up on the latch.
and fold the left side of the back. The right side of the seat back folds in the same way. A folding armrest is built into the back of the rear seat. To use the armrest
pull it from the top
and fold it to a horizontal position.
NOTE
Cup holders are provided in the armrest. Be careful when using coasters. While the vehicle is in motion, drinks in the cup holders may spill and burn passengers or ruin the appearance of carpets and seat upholstery. Place only drinks in securely closed containers in the cup holders.
Source: http://toyotauto.net/corolla/zadnee-sidene.html