Shana puts the Cold Cup to the test throughout the day. At 6 a.m., she experiences a little blowback, but at 1 p.m., there is still lots of ice and time for a refill. Shana mentions that she accidentally spills some water when refilling, but advises that this can be avoided by putting the lid on gently or inserting the straw after closing the lid. By 8 p.m., there is still some ice left, and her drink remains cold all day. She even leaves some water in the cup overnight, and it is still ice cold the next morning.
