Owala 355 ml insulated coffee tumbler - SmoothSip Slider, Crochet Queen, leakproof travel mug

The Owala SmoothSip Slider is a 12-ounce insulated stainless-steel coffee tumbler with a leakproof sliding spout designed for smooth sipping and reliable temperature retention.

Whether you tote your beverage to work, a weekend hike, or around the house, this compact travel mug combines a seamless sipping experience with dependable insulation. Built from double-wall stainless steel and finished with a SmoothSip Slider lid, it prevents spills while keeping hot drinks warm and cold drinks chilly. The small 12 oz capacity makes it easy to grip, fits most cup holders, and reduces wasted coffee when you want a single, perfectly sized serving.

How does the SmoothSip Slider prevent spills and splashes?

The Slider lid features a sliding closure that seals the spout fully when not in use, so liquid stays inside even if the cup tips. The seamless opening is shaped for comfortable lip contact and reduces drips and splashback during sips. You can rely on the mechanism for everyday commuting and bag stowage when closed.

• Sliding top locks the spout closed to stop leaks.
• Seamless, rounded spout for drip-free sipping.
• Compact lid profile reduces chance of accidental openings.

Will this tumbler keep my drinks hot or cold?

Yes — the double-wall stainless-steel construction creates an insulating air barrier that slows heat transfer. According to the design specifications, hot beverages stay warm for hours while cold drinks maintain temperature much longer. This makes it suitable for both morning coffee and iced beverages through the day.

• Double-wall vacuum-style insulation for temperature retention.
• Keeps hot drinks warm for hours; preserves cold beverages far longer.
• Stainless steel interior won’t retain flavors between uses.

Is the cup easy to clean and safe to use daily?

The cup is made without BPA and phthalates and combines a hand-washable body with a dishwasher-safe lid for convenience. Simple construction means fewer crevices where residue hides, and the smooth interior wipes clean quickly. For best long-term performance, hand washing the stainless-steel body is recommended while the lid components tolerate dishwasher cycles.

• BPA- and phthalate-free materials for everyday use.
• Hand wash the tumbler body; lid is dishwasher-safe.
• Removable lid parts make rinsing simple.

How portable is the 12 oz size and what situations is it best for?

The 12-ounce capacity is intentionally compact for one-handed carrying, smaller cup holders, and shorter outings where you want just a single drink. Its slim footprint fits most vehicle cup holders and slips into a tote or backpack without bulk. The leakproof Slider lid adds confidence when you’re on the move.

• 12 oz capacity ideal for personal servings and reduced waste.
• Fits many car cup holders and small bag pockets.
• Lightweight and easy to grip for commuting or quick errands.

Who is this for? The Owala SmoothSip Slider 12 oz tumbler suits anyone who wants a compact, leakproof mug for daily coffee or iced drinks — commuters, students, parents juggling a bag and a beverage, or anyone who prefers a single-serving travel cup. It’s especially helpful if you need a spill-resistant option that still offers comfortable sipping and reliable insulation in a small footprint. Backed by Owala’s limited lifetime warranty, this cup is a practical choice for daily use and on-the-go routines.