Ello Oasis 18oz Insulated Stainless Steel Kids Tumbler with Retractable Straw — Leak-Resistant, 18-Hour Cold

Ello Oasis 18oz Insulated Tumbler is a spill-proof, kid-sized stainless steel cup with a retractable silicone straw that keeps drinks cold for up to 18 hours and tucks away for clean, leak-free transport.

Designed for school days, sports practices and family outings, the Ello Oasis combines double-wall vacuum insulation with a unique hide-a-straw lid so children can sip without mess and parents can pack with confidence. The 18-ounce capacity fits most backpacks and cup holders, and the BPA-free components are top-rack dishwasher safe for quick, everyday cleaning. Available in playful colors, this tumbler balances durable stainless-steel construction and a kid-friendly, easy-to-use lid system.

How does the retracting straw reduce spills and keep the drinking area clean?

The Oasis lid features a twist-activated dial that retracts the soft silicone straw into the lid when not in use, sealing the drinking opening. This mechanism turns the tumbler into a leak-resistant container and shields the straw from dirt and germs between sips.

• Hide-a-straw dial locks the straw inside the lid for transport.
• Soft silicone straw provides comfortable sipping for kids.
• Closed lid minimizes leaks when tossed into backpacks or lunch bags.

Will this keep drinks cold for a full school day?

Yes. The double-wall vacuum-insulated stainless-steel body preserves cold temperatures for up to 18 hours, so water, juice, or iced drinks stay refreshingly cool through classes and after-school activities. It’s designed to maintain chill without condensation on the outside.

• 18-hour cold retention for long days away from home.
• Double-wall insulation prevents exterior sweating on hot days.
• Works well with iced beverages, smoothies, and cold milk.

How easy is the Ello Oasis to clean and maintain?

The tumbler is BPA-free and the lid and body are top-rack dishwasher safe, simplifying routine upkeep. Because the straw retracts into the lid, the drinking surface stays cleaner between washes; still, periodic thorough cleaning of the straw and lid components keeps performance optimal.

• Top-rack dishwasher safe parts for quick cleaning.
• BPA-free materials for everyday use.
• Removable lid components allow occasional hand-wash detail cleaning.

Does the size and shape work for backpacks and car cup holders?

The 18oz capacity hits a balance between hydration and portability, fitting most standard cup holders and school backpack side pockets. Its slim, tapered profile makes handing to children easy while still holding plenty of fluid for a full school day or practice.

• 18-ounce volume fits backpacks, lockers, and most cup holders.
• Lightweight stainless steel construction for everyday carry.
• Compact shape designed for kid hands and tight storage spaces.

Who is this for? The Ello Oasis 18oz Insulated Tumbler is best suited for school-age children, coaches, and busy parents who want a reliable, low-mess hydration solution. It’s especially useful for families that need a durable bottle that survives backpacks, athletic gear bags, and car trips while keeping drinks cold. If you want a reusable container that combines easy cleaning, a protected sipping surface, and true leak-resistance for daily life, the Oasis is designed to make hydration simple and tidy.