6 PACK Kids Sublimation Tumblers 12oz Blank Sippy Cups - DIY Craft Set

Our review of these 6 PACK Kids Sublimation Tumblers finds them best suited for crafters and parents who want a ready-to-decorate set of durable sippy cups for children. The biggest reason to consider this pack is the combination of a true blank sublimation coating on food-grade 18/8 stainless steel and the included accessories that let you start personalizing immediately. For DIY projects, classroom crafts, or small gift production the set saves time by supplying six identical 12 oz tumblers, shrink wrap, rubber bases, and a sheet of waterproof stickers.

Key Features

• Complete 6-pack: Six individually boxed 12 oz tumblers let a crafter produce multiple matching or varied designs at once without extra sourcing.
• Premium sublimation coating: Even polymer coating is designed for smooth, full-color sublimation transfers and consistent print results across the set.
• Leak-resistant straw lid: Pop-up straw lid with a spill-proof valve and thickened seal ring reduces accidental spills during daily use.
• Food-safe construction: Made from 18/8 304 stainless steel and BPA-free materials, the cups are odorless and non-toxic for kids.
• Insulated performance: Double-walled vacuum design keeps drinks warm for hours or cold for extended periods for everyday school and travel use.
• Starter accessories included: Each pack includes shrink wrap, rubber bases, and 50 waterproof DIY stickers to speed up finishing and personalization.

Who It's For

These tumblers are ideal for hobbyists, small craft businesses, teachers, and parents who want a ready-made blank canvas for heat press and sublimation projects. The six-pack format makes them useful for party favors, classroom projects, or testing multiple designs without buying single units.

Those who need a heavy-duty lid for high-impact outdoor play or who prioritize an ultra-durable plastic lid may want to look elsewhere, since several users reported issues with lid breakability under rough handling.

Pros & Cons

Pros

• Excellent sublimation surface that yields bright, detailed prints.
• Comes as a practical bundle with shrink wrap, rubber bases, and stickers for immediate use.
• Stainless steel, vacuum-insulated construction offers reliable temperature retention.

Cons

• Lid durability is a realistic limitation; some customers experienced tops breaking sooner than expected.
• Functionality of lids received mixed feedback, so extra care and inspection are advisable after purchase.

Specifications

Our Verdict

This 6 pack of blank 12 oz kids sublimation tumblers is a smart buy for crafters and small sellers who need a consistent, printable surface and useful starter accessories. While lid breakability is a fair limitation to note, the strong appearance and reliable coating make these tumblers good value for personalized gifts, classroom projects, and small production runs.

Frequently Asked Questions

Are these tumblers safe for children?
Yes, they are made from food-grade 18/8 stainless steel and are BPA-free and non-toxic.

Do they come ready for sublimation?
Yes, the polymer sublimation coating and included shrink wrap make them ready for heat press and full-color transfers.

Will the lids leak?
The pop-up straw lid has a spill-proof valve and thickened seal ring to reduce leaks, but some customers reported lid breakage under heavy use so handle lids with care.