I purchased FOUR total bottles (2 of the 24 oz & 2 of the 32 oz)! I already had two of the Contigo 24 oz but NOT insulated (love them because the one-handed cap is my favorite); so, when I got email stating I could get my same great cap, but INSULATED, I was thrilled! NONE of the 4 I ordered are insulated (very cold water gets room temperature after just a few hours)! I’m sure if I add ice cubes it will stay cooler for longer but these are NOT insulated! I have only used these indoors! Disappointed in deception by a product I have loved in the past!