Bests & Worsts Reviews from Amazon

Purchased this set of cups. One of the lids had an obvious manufacturer defect, as it broke off at the rim right where the "push to clean" button is. This caused the lid to leak, which is a potential burn hazard if the cup contained a hot beverage. I reported it to Contigo not once but twice, with photos attached, because there is a LIFETIME GUARANTEE. Contigo never bothered to respond to either message. My advice: don't purchase their products. The lifetime guarantee means nothing.