My lid broke after using it for 4 days, I was pretty gutted but I just emailed the company and they sent a new lid first class and I got it the next day (free of charge). I was then told there going to be developing a new type of lid that fixes this problem. Once the new lid was developed and in production they sent it out free of charge again. It works perfectly.
Get one now and you wont be disappointed. The new lid is very very durable. Totally worth the money.