The Lower Adapters click onto the lower connection points of your Olive pram to easily convert your single into a double. You can attach the Carry Cot Mx, Carry Cot M2, Avery Capsule or Olive Second Seat to the Lower Adapters. Note: the Second Seat Kit, purchased separately, comes with the toddler seat and Lower Adapters. You do not need to purchase the Lower Adapters if you have the Second Seat Kit.