Everything is made of glass. I used these around April 2025! Left ▶︎ Chu Chu 240ml Slim Type Baby Bottle The bottle, nipple, and cap are all new, unused, and unopened. Right ▶︎ Chu Chu 150ml The bottle was used 3 times for outings, and the nipple has some discoloration. I'm selling these because I don't use them anymore (*^^*) I'll offer a discount if you purchase them with other items I'm selling, so feel free to comment!