Ello Oasis 40 oz Tumbler with Handle & Retracting Straw - Leakproof

In this review the Ello Oasis 40 oz Tumbler is judged on portability, leak protection, and everyday usability. The bottom line: it is a solid choice for commuters, students, and anyone tired of wet bags because the defining feature is its 100% leak-proof lid with a retracting straw that tucks away cleanly. The tumbler balances insulation, dishwasher convenience, and a cup-holder friendly shape, making it an easy daily driver for cold drinks and on-the-go use.

Key Features

• Leak-proof retracting straw: The patented hide-a-straw technology lets the soft silicone straw tuck away with a dial so the lid seals and the drinking surface stays clean when not in use.
• Long cold retention: Insulated stainless steel construction keeps beverages cold for extended periods so iced drinks stay refreshing through the day.
• Cup holder friendly design: The tapered profile fits most cup holders, which makes it convenient for commutes and road trips.
• Dishwasher safe: The top-rack dishwasher safe design and BPA-free materials make cleaning straightforward after heavy use.
• Generous capacity with handle: The 40 oz size and integrated handle reduce refill frequency and make carrying easier for long outings or school days.

Who It's For

The Oasis 40 oz is ideal for people who need a large, reliable tumbler that prevents spills: commuters, parents, students, and anyone who carries a drink in a bag. Its retracting straw and sealed lid are especially useful for those who want a clean drinking surface and worry-free transport of cold drinks.

It may be less suitable for people who prefer very compact bottles for minimal carry or those who need vacuum insulation certified for long hot beverage performance; this model is presented and praised mainly for cold retention and transport convenience.

Pros & Cons

Pros

• True leak-proof performance when the straw is tucked and lid dial is closed, so it can be tossed in a bag without spills.
• Effective cold retention that keeps drinks chilled for many hours while remaining cup holder compatible.
• Easy maintenance because it is BPA-free and top-rack dishwasher safe.
• Comfortable to carry thanks to the handle and large 40 oz capacity.

Cons

• Some customers report occasional durability concerns, so it may not be as rugged as heavier-duty insulated bottles.
• The large 40 oz size may be bulky for users seeking a minimal or lightweight bottle option.

Specifications

Brand	Ello
Capacity	40 oz
Lid type	Retracting straw with leak-proof dial
Material	Insulated stainless steel, BPA-free
Cleaning	Top-rack dishwasher safe
Cup holder	Tapered design fits most cup holders
Color	Pistachio

Our Verdict

The Ello Oasis 40 oz Tumbler is a practical, good-value option for anyone who needs a large, portable cup that stays leak-free and cold for long periods. Its hiding straw and dishwasher-safe construction make it low fuss for daily life, though those seeking ultra-rugged gear or a very compact bottle should consider other styles.

Frequently Asked Questions

Is the lid truly leak-proof?
When the straw is tucked and the lid dial is closed the design is 100% leak-proof for bag transport.

How long does it keep drinks cold?
The insulated stainless steel construction keeps drinks cold for many hours, making it suitable for all-day use.

Can I clean it in the dishwasher?
The Oasis is BPA-free and top-rack dishwasher safe for easy cleaning of lid and cup.