Nalgene OTF Kids Bottle 350ml, featuring a monkey design. The cap is compatible with the OTF bottle 700ml. It's easy to open with a push button with a locking mechanism, has a drinking spout for easy drinking, and closes with a one-touch click. Nalgene products are known for being lightweight and durable. They are also BPA-free, meaning they don't use chemicals that are a health concern, making them safe for children. Even when actually using it, there's no unpleasant plastic smell, and odor transfer isn't a concern. I think it will be useful for everyday use, as well as for mountain climbing, camping, and cycling. Regarding shipping, it will be sent via Japan Post's standard outside package service, packaged with cushioning material and shipped in a cushioned envelope. It will be delivered to your mailbox, but if it doesn't fit, it will be delivered in person. The last two photos are of the bottle I use. Thank you.