DetailsDurable Design - Double-wall stainless steel construction ensures long-lasting durability and temperature retention.Extended Cold Retention - Keeps drinks cold for up to 40 hours, perfect for all-day hydration.Kid-Friendly Straw - Flip-up straw design allows for quick and easy sipping, ideal for children.Leak-Proof Lid - Prevents spills and messes with a secure, leak-proof lid.Portable Handle - Easy carry handle makes it convenient for school, sports, and travel.Stable Base - Silicone non-slip base provides stability and prevents tipping.