I bought this Sigg active top, as I have a couple of Sigg bottles and I don't really like having to take the lid off everytime I want a drink. I thought it was going to be a good quality Sigg product, but it didn't even last a single day! With no excessive forced used, the lid snapped off. I have found that the 'open' and 'close' very easily switch between the two, and so you are forever checking to see if it is open or not. Very disappointing product from Sigg, however customer service were fantastic, and arranged a refund promptly. Very happy with the customer service.