It is looks really cool (I have silver), triple-insulation works perfect consider at least the condensation free skill but not keep hot up to 6 hours (max 4 hours) . I didn't check the cold keeping but handle with reservation 24 hours as description said (my opinion will be less then 20, rather 16). The slider lid is comfy and secure fit to the mug but not leak proof at all, it's flow like a river so always store up side. Overall I like it but it is not perfect. If EcoVessel change or redesign the top then could be better.