350ml Portable Stainless Steel Tumbler – 304 Inner, Vacuum Insulated, Leakproof, BPA-Free for Daily Use

This 350ml portable tumbler is designed for those who need a reliable and lightweight drinkware solution for their busy lifestyle. The inner layer is crafted from food-grade 304 stainless steel, offering excellent corrosion resistance and preserving the pure taste of your beverages, while the outer layer uses durable 201 stainless steel for added strength and longevity. The slim and compact design fits easily in most cup holders, backpack side pockets, and handbags, making it perfect for commuting, travel, and everyday use. Advanced vacuum insulation keeps your drinks hot or cold for hours, so you can enjoy your favorite beverage at the perfect temperature throughout the day. The leakproof lid with a food-grade silicone gasket prevents spills in your bag or on your desk. All materials are BPA-Free and meet FDA food safety standards. With its lightweight construction and sleek appearance, this portable tumbler is a practical and stylish choice for daily hydration.

Q1: Is this tumbler made of food-grade material?
A: Yes. The inner layer is made of 304 stainless steel, which is food-grade and corrosion-resistant. The outer layer is 201 stainless steel for durability. All plastic components are BPA-free.

Q2: What is the capacity of this tumbler?
A: This tumbler has a 350ml capacity, making it compact and portable for daily use.

Q3: How long does the vacuum insulation keep my drink hot or cold?
A: The double-wall vacuum insulation helps maintain temperature for several hours. For best results, we recommend preheating or pre-chilling the tumbler with hot or cold water for a few minutes before filling.

Q4: Why is this tumbler called a "portable tumbler"?
A: The lightweight and compact design makes it easy to carry anywhere – perfect for commuting, travel, and everyday use.

Q5: Is the lid leakproof?
A: Yes. The lid features a food-grade silicone gasket that creates a tight seal when properly closed. It is leakproof for daily commuting and travel.

Q6: Can I put the tumbler in the microwave?
A: No. The stainless steel material is not microwave-safe. Do not place it in a microwave, oven, or on a stovetop.

Q7: Is the tumbler dishwasher safe?
A: The stainless steel body is dishwasher safe, but we recommend hand washing the lid to prolong its lifespan, as high-temperature dishwasher cycles may warp plastic components.

Q8: How should I clean the tumbler?
A: Hand wash with a soft sponge and mild dish soap. For stubborn stains, soak with warm water and baking soda for 15 minutes, then rinse thoroughly. Avoid abrasive cleaners or steel wool.

• Packing quantity: 24 pieces per carton

• Carton dimensions: 29 × 43 × 20 cm

• Net weight per unit: 248g

• Gross weight (approximate): about 6.5 kg per carton (including packaging materials)

• Packaging method: Plain cups with standard egg tray divider, packed in carton. Each piece is individually wrapped in a polybag and protected with an egg tray-style divider inside the carton to prevent movement and scratches during transit. The outer carton is made of sturdy corrugated cardboard.

Before First Use:
Wash the tumbler, lid, and silicone gasket with warm soapy water and rinse thoroughly. Do not use abrasive cleaners or metal scouring pads, as they may scratch the stainless steel surface.

Daily Use Tips:
For hot drinks, preheat the tumbler with hot water for a few minutes, then empty and fill with your beverage. For cold drinks, pre-chill the tumbler with cold water, then empty and fill. Do not fill completely to the brim. Leave some space at the top to prevent pressure buildup and make lid closing easier.

Cleaning Instructions:
Hand wash with a soft sponge and mild dish soap after each use. For stubborn stains, use a mixture of baking soda and warm water, soak for 15 minutes, then rinse thoroughly. The lid and silicone gasket can be removed for thorough cleaning. Ensure the gasket is completely dry before reattaching. Avoid using bleach, chlorine-based cleaners, or abrasive pads.

Important Precautions:
Do not microwave or place in oven, stovetop, or freezer. Do not overfill with hot liquids, as steam pressure may cause the lid to pop open or leak. Avoid dropping the tumbler or subjecting it to strong impacts, as this may damage the vacuum insulation. Do not use the tumbler to store acidic or corrosive chemicals. It is designed for beverages only. When not in use for extended periods, store the tumbler with the lid removed to allow air circulation and prevent odors. Do not overtighten the lid. Close it firmly but gently to avoid damaging the threads or silicone gasket.

We offer a variety of customizable options to meet your brand and market needs:

• Logo Printing: Silk screen, pad printing, or laser engraving on the tumbler body or lid – minimum order quantity applies.

• Exterior Color: Available in a range of standard colors – custom Pantone color matching is available for bulk orders.

• Packaging: Upgrade to a gift box, custom sleeve, or branded carton with your artwork.

• Accessories: Optional reusable straw, cleaning brush, or extra silicone gasket can be included.

• Surface Finish: Available in brushed, polished, or powder-coated finish.
  Please contact our sales team for detailed pricing and sample orders.

• Selling Units:

  pcs

• Single gross weight:

  248 g

• Packing size:

  29 x 43 x 20 cm