Camelbak is a tried and true brand for kids’ water bottles. The Eddy water bottle is an extremely durable kids’ version of the classic Camelbak. It only holds 12 oz, so downside is that your little one will likely have to refill throughout the day. There are literally a gazillion designs available with easy to clean parts. The company also provides replacement parts at little to no cost (depending on the defect). This has allowed my kids to use their Camelbak bottles for years now!