8oz Stainless Steel Sippy Cups for Toddlers – Spill-Proof, Insulated & Dishwasher Safe Perfectly sized for little hands, these 8oz cups feature dual handles for a secure and comfortable grip. Made from non-toxic stainless steel with double-wall vacuum insulation, they keep drinks at the right temperature while preventing spills. The wide-mouth design makes cleaning easy, and each set includes two versatile lids: a handle lid for sippy cup use and a spill-proof lid for insulated cup use. Durable, safe, and dishwasher-friendly, these cups are ideal for everyday toddler use.