Terrible craftsmanship
I can not believe this product is an "amazon's choice". I was very disappointed after opening it. The craftsmanship looks bad. No instruction. The product seems to be used before. Given the product got more than 4 stars on amazon, I am not sure if mine is just a bad apple.<br />I order one from walmart with just $6.88: Equate Reusable Hot or Cold Therapy Water Bottle. Way much better quality.
Rating: 1 stars