Frequently Asked Questions
Q1: What materials are these insulated tumblers made of?
Our tumblers are crafted from high-quality, heat-resistant clear glass and 18/8 food-grade stainless steel. All components are BPA-free and eco-friendly.
Q2: How long can these cups maintain beverage temperatures?
Thanks to the copper-lined vacuum insulation in the base, these tumblers offer exceptional temperature retention for both hot and cold drinks.
Q3: Are the glass tumblers leak-resistant?
Yes, they feature secure screw-on fasteners and silicone rings to ensure a stable, leak-resistant hold, making them ideal for travel and gatherings.
Q4: Does the glass sweat with cold drinks?
The double-wall glass and insulated base design effectively prevent condensation, keeping the exterior dry and easy to grip.
Q5: Are these products suitable for outdoor activities like camping?
Absolutely. Their durable construction, portable design, and non-slip bases make them perfect for picnics, camping, and outdoor social events.
Q6: How do I clean the insulated glass cup?
The glass top and insulated base are designed for easy cleaning. We recommend hand washing to maintain the integrity of the vacuum seal and the clarity of the glass.
Yongkang Yifu
