"These bottles are handmade by me! The plastic rim is 3D printed, so please understand that there will be visible lines in it as with any 3D printed item. Materials are glass mason jar, PLA plastic rim, MAX CLR food-safe coating for plastics (feel free to message me for more information regarding any food safety concerns), and 100% silicone nipple. They are BPA, and phthalate free! The jar and nipple are dishwasher safe, but drastic temperature changes can affect the adhesive of any decals and warp the plastic rim. Plain bottles are dishwasher safe (minus the plastic rim) but I recommend handwashing any with vinyl decals so they last longer. I clean them myself but I highly recommend that you wash the nipple before use just to be safe! The jar is microwaveable and refrigerator safe, but I recommend taking the plastic ring off before microwaving and using the provided metal lid in the fridge to increase longevity of your bottle! If you only purchase the jar adaptor you'll receive the plastic rim and nipple only. The plastic rim is compatible with any regular mouth mason jar, so you can swap it around as much as you wish! This can also be used if you want a bottle that you can switch the color of while keeping the design (decorated bottles can be found elsewhere in my shop). I do my absolute best to sanitize everything but I do have cats/dogs, so please be understanding if a hair makes it’s way into your order despite my efforts. Thank you for taking the time to read this and for supporting me!"