30 oz Vacuum Insulated Stainless Steel Travel Tumbler features 18/8 Stainless steel construction, double-wall insulate, keeps beverage hot or cold for up to 12 hours, tapered bottom fits cup holders, clear plastic push-on lid with sliding drink opening.The smart water bottle is ideal for easy travel, perfect for outdoor sports, work, beach, school, office, picnic, yoga, hiking, camping, cycling, running, etc. Simple and practical, it is the best gift for friends, family, children, sons and daughters. Measuring 30oz, this custom 30oz vacuum insulated stainless steel travel tumbler. 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.