The inside of the bottle is made of 304 stainless steel and the outside is made of 201 stainless steel. This vacuum water bottle is perfect for travel, business, school, family gatherings and many other occasions. The large capacity of 20 ounces can meet your daily drinking needs. It keeps your favorite beverage cold for up to 12 hours or hot for up to 10 hours. We can print your brand logo or anything on the outside of the bottle. Measuring 20oz, this custom multicolor outdoor stainless steel vacuum water bottle 20oz with handle. Usage Scenarios: Office supplies, school stationery, corporate promotions, trade show giveaways. Tailored branding: Supports logo imprint and design personalization. Product Highlights: BPA-free, leak-proof, travel-friendly.