Small and lightweight, the 12oz Kid Kanteen Classic with Sport Cap 3.0 is the natural progression from a Sippy configuration. The entire cap is BPA-free, super durable and the new soft silicone spout makes the Sport Cap 3.0 safe for new teeth. The 12oz size fits into just about any cup holder, stroller, or car seat and its large-mouth design fits ice cubes and makes cleaning simple. Go with the super durable and leak proof Loop Cap option to be safe in a lunchbox or backpack. Also BPA free of course!