18/8 stainless steel is 304-grade stainless steel, which is the most widely used and flexible austenitic form of stainless steel. The numbers 18/8 represent the composition of this steel as 18% chromium and 8% nickel, making it very resistant to corrosion and oxidation
If you're concerned about BPA and the possible chemicals that could leach from a plastic bottle, opt for stainless steel. These bottles are constructed from culinary-grade stainless steel and are non-reactive, meaning they won't shed harmful toxins when filled with H2O.
Best stainless steel water bottles for kids are made with 18/8 stainless steel that is BPA free and is the preferred choice for school since they are more durable.
Stainless steel is a non-toxic material that doesn't need a liner. It's a metal that doesn't leach chemicals, so it’s safe to drink from stainless steel bottle for toddlers.
Triple walled stainless steel thermos keeps water hot/cold for long periods.