The 240ml bottle was purchased in an emergency during a trip last June, so it was used for about 8 months. The 160ml bottle has a lid and was a gift. I'm selling these because my child, who is over a year and a half old, has stopped using baby bottles. * The green bottle does not have a silicone nipple. * The pink bottle's nipple has a Y-shaped hole, so I think it's for older babies, but I'm not sure anymore, so please consider it as an extra.