Philips avent sealing discs pack of 6 this is the perfect product for use with the philips avent bottles this is perfect for on the go as this allows you to turn the baby bottle into storage this means the contents in the bottle will last longer and wont spill everywhere you simply remove the teat put the disc in place put the teat back on and you are good to go this pack contains 6 discs and is ready to buy from baby security today