I was so mad when it leaked. I posted the leakage photos at Fabulous Mom @ Facebook and send a private message to Vivian Foo at her facebook, the founder of Fabulous Mom. Instantly, I got replied from Vivian. She asked me to send more pictures of this leakage to her business email address. She added she sold 8000 boxes of this storage bags and so far this is the first complaint she had. (At my ex-nanny place, another mother also breastfeed her baby and she also using Jingle Jungle Storage Bag. I asked my ex-nanny, does this bag got leakage. She told got because when she thaw the bag in a mug of water, the water sometime will turn cloudy. I guess not much people will put in effort to write a complaint letter/email. As for me, this bags really get into my nerve and make me so frustrated specially Box No.2 got 8 leakages bag)