If you want an easy to clean lead free kids water bottle, this is a solid choice. If your main concerns are oral motor development and you are willing to spend a little bit more time cleaning the lid and you are okay with a leaded sealing dot under the bottom metal cap, the Klean Kanteen TK Wide straw bottle is the way to go. The Thermos Funtainer is a good less expensive bottle for oral motor development but it also has a leaded sealing dot under the plastic bottom boot. If you want the most durable kids bottle possible and are okay with a leaded sealing dot under the metal bottom cap, the Yeti is the top contender. Just keep in mind that while the Yeti may look fairly easier to clean, the lid has a bunch of crevices that are very difficult to clean. It wouldn’t surprise me if over them, mold grew under part of the cap that you can’t access to clean with the Yeti. If you want to a completely plastic free bottle, the Pura Kiki straw bottle is the way to go. All new Pura Kiki bottles should be lead free for their sealing dot. They also sell single walled bottles.Lead explanation - Most insulated stainless steel water bottles sold in the US use a leaded sealing dot to vacuum seal their bottles. It doesn’t touch the inside of the bottle. Instead it is on the outside. Since it is illegal for kids products to contain more than 90 ppm in accessible components, water bottles marketed to kids with a leaded sealing dot will often have a bumper or sticker on the bottom that isn’t supposed to come oxff. Kleen Kanteen and Yeti both seem to have extremely durable bottom caps that rarely come off. However, it would be ideal if more companies would use lead free sealing dots like Hydroflask started doing post 2018. When buying other insulated stainless steel brands, be mindful that adult bottles only usually cover the leaded sealing dot with paint that can wear off. Children might use these bottles and be exposed to lead. Single layer non insulated stainless steel bottles (such as Kleen Kanteen) are not a concern because they do not use a sealing dot.Additional comments: The dew color hydroflask spout is sharper around the edges than the lake color. I ordered a replacement because I thought it was a defect but the replacement was no better. I also wish that the Hydroflask came with a stainless steel or medical grade silicone straw so that plastic is not constantly touching the water.Pictures: Yeti, Hydroflask, and Klean Kanteen caps from left to rightYeti lead free sealing dot vs Yeti metal boot that covers the leaded sealing dot for the adult 26 oz bottleLast photo: 2 adult bottles - purple Kleen Kanteen single wall non insulated bottle that has no lead because it doesn’t require a sealing dot vs pink Camelbak insulated bottle with leaded sealing dot covered by a thin layer or paintAn ideal bottle would combine the Klean Kanteen straw lid with an insulated lead free bottle base. Although single walled Klean Kanteen bottles are lead free, the straw spout only fits the wide mouth insulated bottles.