I bought some off brand stainless 32oz insulated bottle 12 years ago for around twenty bucks. I fill it with ice and then fill the voids with water, and there is still ice a day and a half later, even at the height of summer. I've been through several universal lids with different designs for various ways to sip and to carry it. I have dropped it from several feet onto concrete a number of times, resulting in denting you can't even really see. I probably got the one gem out of many duds, or one of a good run in production, but I'll be disappointed when it does inevitably fail and I have to get something else.