My daughter, 8 weeks has no pacifier accepted until I came across this one. He's not very nice, but well made and exactly corresponds to the description. The cherry-shaped curvature of Nuckis resembles the nipple very and is not too big for a 8 weeks old baby. The slightly bitter taste seems to like her, because it seems more real than the disgusting plastic taste of the other Nuckis. The Nucki to the mouth adapts flexible and is not as rigid as other Nuckis. The cleaning is made simple. I can not say anything about the long period of time! Top product for finicky infants. Value ok!