Nathan Kids 320 ml Kid Cap Stainless Steel Bottle Stainless steel keeps fluids warm or cold for hours (not for use with hot beverages or milk products) Leak-proof cap and bottle Finger-loop with QuickClip for attaching to belts and backpacks Stainless steel will not rust and is dishwasher safe (top rack) Kid cap allows you to access fluids without unscrewing the cap or tilting the bottle