You might not believe the GSI Outdoors Microlite 1000 Twist Bottle is insulated because of how light and thin it was designed, but that doesn't mean it cannot keep your coffee toasty for half a day, or your frozen drinks cold for longer than a day. Although thinner, this bottle's vacuum insulation maintains heat/cold just like the rest of them, and its thinner design holds more liquid for more drinking.
Insulated bottle made thinner than most insulated bottles
Vacuum insulation maintains 16 hours of heat and 32 hours of cold
Stainless steel construction provides purity and durability
Screw top cap is easy to open even when everything is frozen