Our stainless cups are BPA-free, phthalate-free, and made with lead and toxin-free materials, ensuring that no nasties are present in our products. They are completely recyclable, keeping the environment clean and green! Made with heavy gauge 18-8 stainless steel to provide strength and durability, with a reinforced lip that stays perfectly round. The aluminum small cups are equally strong. Our mint julep cups are perfect for enjoying still and effervescent drinks, with their stainless steel construction keeping the drink cool for longer periods. Easy to clean and maintain. Hand washing with mild soap and warm water is recommended for optimal performance and longevity, but all stainless steel products are also dishwasher safe. Perfect for both indoor and outdoor use, making them ideal for camping, outdoor activities, and more.