I bought this several months ago for sports. My initial impression is that the straw is difficult to flip for a 6 year old. I assumed after some use it would be easier but it is still difficult. After several months of use I noticed the plastic on the underside of the straw being worn badly by small specs of sand which did not come out with cleaning despite how hard I tried. Now I’m worried the plastic will break down. The replacement lids are out of stock. I wanted to love this because it does work extremely well to keep water cold but functionality is a lot more difficult for a school aged child.
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