A kitchen travel mug designed for reliable temperature retention, keeping drinks cold for up to 20 hours and hot for up to 5 hours. Ideal for commuters and outdoor days who want consistent sips and spill-free journeys, the IRON °FLASK Insulated Tumbler comes with two lid options and a cupholder-friendly shape. Is the combination of large capacity and practical lids right for daily use?
⚡ At a Glance
- • Insulation Performance: Double-walled vacuum insulation keeps drinks cold up to 20 hours and hot up to 5 hours
- • Best for: Commuters, hikers and anyone who needs long-lasting temperature control and large-capacity hydration
- • Not ideal for: People who prefer dishwasher-safe drinkware rather than hand-wash only designs
Vacuum insulation and double-walled stainless steel deliver sustained temperature control. Large 1.2L capacity and durable construction suit active, all-day use.
All-day temperature control, with double-walled vacuum insulation
A vacuum layer between two 18/8 stainless-steel walls greatly reduces heat transfer by conduction and convection. The double-wall construction slows temperature equalisation so hot and cold drinks hold their temperature longer.
Cold beverages stay crisp for many hours while hot drinks remain warm for several hours, making day-long outings and long commutes more convenient.
Reliable spill management, with two airtight lid options
A splash-proof straw lid allows sipping without removing the lid, while a dedicated leak-proof flip lid uses a secure closure to reduce escape of liquids. Both lids are designed to seal against the tumbler mouth to minimise leaks.
Choose the straw lid for on-the-go cold drinks or the flip lid for sealed, safer transport of hot beverages, helping to avoid accidental spills in bags and cars.
Durable, easy-to-clean build, with 18/8 stainless steel and wide mouth
18/8 stainless steel composition resists corrosion and everyday wear, while a broad opening offers direct access for brushes and sponges. A rubber base reduces slippage and protects surfaces from noise.
Long-lasting materials and a wide mouth make hand cleaning straightforward and keep hygiene simple for daily use, while the non-slip base improves stability.
✨ The 4 Key Reasons for IRON °FLASK Insulated Tumbler
- Dual lids - Switch between straw sipping and sealed flip closure for versatile use
- Large 1.2L capacity - Supports roughly 40oz hydration for extended outings
- 18/8 stainless steel - Corrosion-resistant construction built for everyday knocks
- Wide mouth opening - Fast, thorough hand-cleaning with standard brushes
📋 Technical Details at a Glance
- Category: Kitchen, Insulated Tumbler
- Capacity: 1.2L (approximately 40oz)
- Insulation: Double-walled, vacuum insulated, Cold up to 20 hours, Hot up to 5 hours
- Material: 18/8 stainless steel, BPA free, non-toxic
- Lids: Splash-proof straw lid and leak-proof flip lid included
❓ Frequently Asked Questions
Q: Are both lids included with the tumbler?
A: Yes, two lids are included, a splash-proof straw lid and a leak-proof flip lid, for different drinking situations.
Q: How long will drinks stay cold or hot?
A: Cold drinks are claimed to stay cold for up to 20 hours and hot drinks up to 5 hours thanks to the double-walled vacuum insulation.
Q: Is the tumbler dishwasher safe?
A: Hand-washing is recommended and the wide mouth makes cleaning straightforward; dishwasher compatibility is not specified in the provided information.
🏆 Our Verdict
Ideal for commuters, outdoor enthusiasts and anyone who wants reliable temperature control on the move. Vacuum insulation combined with durable 18/8 stainless steel and two lid options delivers practical, everyday performance for hot and cold drinks. While individual budgets vary, sturdy construction and versatile features commonly translate to sensible long-term value.
