Ello Oasis 18oz Insulated Stainless Steel Kids Tumbler with Retractable Straw — Leak‑Proof, BPA‑Free

The Ello Oasis 18oz Insulated Stainless Steel Kids Tumbler with Straw is a leak-proof, retractable-straw water bottle that keeps drinks cold up to 18 hours and tucks the straw away for clean, spill-free transport.

Designed for school days, practices, and everyday adventures, the Oasis combines double-wall insulation with a patented hide-a-straw lid so kids can sip without spills and parents can pack backpacks with confidence. Its 18-ounce capacity fits most cup holders and locker shelves, while the BPA-free materials and top-rack dishwasher safety make routine care fast and easy. Available in playful colors and patterns, this tumbler balances kid-friendly style with practical features that reduce mess and maintain beverage temperature.

How does the retracting straw prevent leaks and messes?

The Oasis lid uses a dial-activated mechanism to fully retract the soft silicone straw into the lid cavity, sealing the drinking opening. When closed, the straw is protected from dirt and the lid forms a leak-resistant barrier so liquids won’t spill in bags or on car seats.

• 100% leak-proof when the lid dial is set to closed
• Silicone straw tucks away to keep the drinking surface clean
• Simple twist-and-lock action for quick use by kids

How long will cold drinks stay chilled in the Oasis tumbler?

The double-wall insulated stainless steel construction slows heat transfer to preserve cool temperatures. Cold beverages can stay refreshingly cool for up to 18 hours, making the cup dependable from morning classes through after-school activities.

• Double-wall vacuum insulation retains cold for extended periods
• Steel interior resists flavor transfer and odors
• Ideal for water, juice, smoothies, and iced drinks

Is the tumbler easy to clean and safe for kids to use?

Yes—the Oasis is made from BPA-free materials and the lid and straw components are top-rack dishwasher safe for low-effort cleaning. The sealed straw design reduces residue buildup on exposed surfaces, and the durable stainless body withstands everyday knocks and drops.

• BPA-free materials safe for food and drink contact
• Top-rack dishwasher safe parts for convenient cleaning
• Removable components allow occasional hand-washing of the lid for thorough care

Will the 18oz size work for school backpacks and cup holders?

The 18oz capacity hits a sweet spot for kids: roomy enough for a full day’s hydration yet compact for common storage spaces. The tumbler’s dimensions are designed to slide into most backpack side pockets, car cup holders, and classroom desk cup slots without tipping.

• 18oz volume fits standard backpack pockets and cup holders
• Lightweight stainless steel body for easy carrying by children
• Compact profile that stores neatly in lockers and lunchboxes

Who is this for? The Ello Oasis 18oz Insulated Kids Tumbler is made for families seeking a practical, low-mess hydration solution for children and teens. It suits students, young athletes, and anyone who wants a spill-resistant, easy-to-clean bottle that keeps drinks cold through busy days. Parents will appreciate the leak-proof transport and dishwasher-friendly parts, while kids will like the fun colors and simple twist-to-open straw action.