Tumbler & Mug Care FAQ

A little product-specific care goes a long way. Check the care instructions for your exact item before washing or heating it. If instructions are missing or disagree, ask GCODesignz before trying a new cleaning method.

How should I care for my tumbler?

For tumblers labeled “Hand Wash Only” and “Not Dishwasher Safe,” wash by hand. Follow any “Not Microwave Safe” and “Avoid Extreme Heat” warnings on your item's listing or care card. Do not treat another brand's dishwasher-safe claim as permission to machine-wash your tumbler.

Are sublimation mugs dishwasher and microwave safe?

Check your exact mug's listing and care card. Use a dishwasher or microwave only when the instructions for that finished mug explicitly allow it. Where the listing recommends the top rack, follow that recommendation. Instructions for one ceramic mug do not apply to every mug or tumbler.

What about lids, straws, and seals?

Check the instructions for each accessory separately. Do not assume that a cup's dishwasher rating also covers its lid, straw, or seals. If cleaning or disassembly instructions are missing, ask us before taking parts apart or putting them in a dishwasher.

How long will my drink stay hot or cold?

Check your specific product's details for any stated heat-retention rating. We do not give one hot-or-cold duration for every tumbler. If your listing does not include a rating, ask us for the specifications for that item.

How do I remove coffee or tea stains?

Use only cleaning methods approved for your item's interior, exterior coating, and printed design. Before using a stain remover, abrasive cleaner, bleach, or a soaking treatment, check the product instructions or ask us for an approved method.

When should I follow supplier instructions?

Use instructions that match your exact cup, coating, print, and accessories, not a general guide for similar drinkware. A dishwasher-safe rating for an undecorated cup does not by itself confirm care instructions for your finished printed item. If the supplier's instructions, listing, and care card disagree, contact GCODesignz with your order number and a photo of the instructions so we can clarify.

Where can I find shipping and return information?

Please see our Shipping & Return Policy.