Camelbak Thrive Flip Straw Kids Insulated Stainless Steel - Magic Unicorns

I love this bottle except for all the pieces and parts that make up the lid – water will be getting inside there and I don’t know how to open it to clean it, other than pulling out the silicone straw. I had a look online at how to take apart the lid but there is nothing. I would much rather a solid lid so I don’t have to worry about mildew growing in all the nooks and crannies.