I bought this bottle for traveling purposes.
Baby latched effortlessly to the bottle. The nipple is very pliable and is good for easy transition from breast to bottle and back. I have not had an issue with leaking.
Gave a 4 star review because it is difficult to warm up milk. I used a glass bottle and then transferred the milk into the liners. I am not a huge fan of the shape of the bottle due to the amount of dead space… otherwise a fantastic product.