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304 Stainless Steel Long-lasting Cold Retention Breast Milk Cooler, Portable Milk Storage Cup. Must-have for working moms in the office and an essential gadget for outdoor trips. ⚫Key Features 🧊 Long-lasting Cooling: Pre-freeze the ice ring. It keeps low temperature for 24 hours at 32-34°C, preserving all nutrients of breast milk. 🛡️ Food-safe Materials: Outer cup and ice ring shell made of 304 stainless steel. Baby bottles use food-grade PP, lid made of ABS. Safe for moms and babies. 🍼 Dual Large-capacity Bottles: 2 independent 280ml bottles, sufficient for daily breast milk storage. 🎒 Portable Design: Built-in carry handle, compact and space-saving, easy to carry to work or travel. 🧼 Leak-proof & Easy to Clean: Detachable parts for thorough cleaning. Tight seal prevents spills and bacterial growth. ⚫Product Specifications - Bottle Capacity: 560ML: 280ml × 2 - Materials: 304 Stainless Steel + Food-grade PP Bottles + ABS Ice Ring - Refrigerant: SAP Polymer Gel 📖Instructions for Use 1.Freeze the ice ring in the fridge for 6-8 hours 2.Put the frozen ice ring into the outer cup, then place the filled breast milk bottles inside. 3.Fasten the lid and take it anywhere ⚠️Notes · Do not let breast milk touch the ice ring directly. · Do not microwave frozen breast milk. Thaw with warm water only. · Do not pour water directly into the outer cup. · Keep away from direct sunlight. · Clean all parts immediately after use. Do not scrub with hard tools or chemical cleaners.