400ml Stainless Steel Double Wall Vacuum Flask with Handle

Frequently Asked Questions

Q: What is the exact capacity of the flask?
A: The flask has a capacity of 400ml (13.5 oz), ideal for single servings of hot or cold beverages.

Q: How long does the double-wall vacuum insulation keep drinks hot or cold?
A: Hot drinks stay hot for up to 12 hours, and cold drinks remain cold for up to 24 hours. Duration may vary based on initial liquid temperature and ambient conditions.

Q: Is the stainless steel food-grade and safe for daily use?
A: Yes, it is made from high-quality 304 (18/8) stainless steel, food-grade, BPA-free, and non-toxic. It does not retain flavors or odors.

Q: Can I customize the flask with my logo or design?
A: Absolutely. Customization options include laser engraving, screen printing, or full-color printing. Contact our sales team for minimum order quantities and artwork requirements.

Q: Is the handle sturdy and comfortable to carry?
A: The handle is made from durable reinforced plastic or stainless steel bracket (depending on model) and is securely attached. It comfortably supports the weight of a full 400ml flask.

Q: How do I clean the flask properly?
A: Hand wash with warm soapy water and a soft sponge. Avoid abrasive cleaners or steel wool. The wide mouth allows easy access. Lid is also hand-washable.

Q: Does the flask come with a warranty?
A: Yes, includes a 1-year limited warranty against manufacturing defects. Excludes damage from misuse, drops, or normal wear and tear.

Q: What are the shipping options and delivery times for custom orders?
A: Production takes 5-10 business days for customization, plus shipping (7-15 business days standard). Express shipping available at additional cost. Contact for a precise quote.

• Before first use, wash the flask and lid with warm soapy water and rinse thoroughly. Hand washing recommended.
• Do not microwave or put in the freezer. The vacuum flask is designed for hot and cold beverages only.
• Avoid filling with carbonated drinks or liquids that may cause pressure buildup.
• Do not use abrasive cleaners, steel wool, or bleach as they may damage the surface and insulation.
• For hot liquids, preheat the flask with hot water for a few minutes before filling to maximize heat retention.
• Do not overfill; leave a small gap to allow for thermal expansion. Ensure the lid is securely tightened before carrying.
• Keep out of reach of young children when containing hot liquids to prevent burns.
• Store with the lid off when not in use to allow interior to dry completely and prevent odors.

This product offers customization in color and capacity. Currently, the flask is available in standard 400ml capacity. Color options include white and any custom color of your choice. For other variations, please contact our sales team.