“Glass water bottles are safe for kids to drink from. They also have the added benefit of being free from chemicals that may be found in plastic and also are easy to clean,” says Jennifer Shu, MD, a board-certified pediatrician in Atlanta. “Many glass water bottles are very sturdy but they still can break, so use supervision when allowing kids to use them.” Thus, stainless steel may be a better option if your child will be using it at school (and some schools may not allow glass).