Water Bottles

It depends on which bottle you're looking at. Here's a breakdown:

Ora Bottle - Yes, fully insulated.
The Ora Bottle features vacuum insulation that keeps drinks cold for up to 24 hours. It's made from 18/8 vacuum-insulated electropolished stainless steel.

Helix Bottle - Insulated Base
The base Travel Mug cup part is vacuum-insulated stainless steel. The water bottle lid is a clear single-wall premium clear plastic.

Helix Light Bottle - No, not insulated.
The Helix Light Bottle is made from clear Tritan co-polyester (50% recycled) with a plastic and stainless steel cap. It's designed to be a lightweight, clear plastic bottle, so it won't retain temperature the way the other two do.

Absolutely. KeepCup’s water bottles are designed to keep your beverages hot or cold. The vacuum-insulated stainless-steel construction of our bottles ensures that they can handle hot liquids, keeping your drinks warm for hours. However, do not store carbonated beverages in your steel water bottle.

Three bottles, depending on how you drink.

Ora Bottle — vacuum insulated, 700ml or 950ml. Keeps water cold for up to 24 hours. Straw and flow adjuster included. For long days and fewer refills.

Helix Bottle — insulated steel base with a clear bottle lid. Splits in the middle, so it goes in the dishwasher without a bottle brush, and converts to a Travel Mug with a Commuter lid.

Helix Light Bottle — lightweight clear Tritan (50% recycled) with a stainless steel cap and silicone carry loop. Not insulated. Designed in Australia, for everyday carry.

All three are leakproof, dishwasher safe, and built from modular parts you can replace rather than bin.

Note: don’t store carbonated drinks in the steel bottles.

As a rule of thumb, no liquid passes through airport security. Go through with your Ora Bottle or Commuter Travel Mug empty, then fill up once you’re airside. Refill points are usually just past the scanners, sometimes disguised as a drinking fountain having an identity crisis.

Buying a tea or coffee onboard or airside? Hand over the cup and keep the lid.

One more thing before you screw the lid on tight and forget about it: cabin pressure. Cruising altitude runs lower pressure than sea level, so a sealed bottle full of air expands to match it. Loosen the lid before takeoff and you won’t be met with a slow hiss and a brief spurt of liquid.

Empty through security. Full once you’re through. Loose lid in the air. That’s the whole trick.

Cabin pressure drops as you climb, the air inside your bottle expands, and it pushes water up and out through the spout. Cabin pressure and straws don’t get along.

Not a design fault. Physics, doing what physics does at altitude.

The Ora Bottle’s stainless steel straw is removable, so you can take it out for the flight and put it back once you’ve landed.

Pull the stainless steel straw out before takeoff and drink from the lid like a normal cup for the flight. Straw back in once you’ve landed.

Don’t seal the lid fully at altitude. Leave it loose so expanding air can escape rather than forcing water out. Ninety seconds of your life, one dry lap tray.

The straw and silicone flow adjuster both lift out without tools, so there’s nothing to dismantle. Keep them in the seat pocket or a side pocket of your bag, and rinse the straw when you land.

Recycled air at cruising altitude sits well below the humidity you’re used to on the ground, closer to desert air than a normal room. Your body notices before your brain does.

Filling a bottle before boarding beats a dehydration headache over the Pacific, and means you’re not waiting on the drinks trolley for 200ml at a time.

The Ora Bottle keeps water cold for up to 24 hours, so a bottle filled airside is still cold when you land.

The 700ml Ora Bottle slides into most seatback pockets without a fight. The 950ml is more carry-on than seatback. It will fit in a bag or a cup holder, but expect a squeeze in the pocket.

700ml — base diameter 76mm, height 257mm. 950ml — base diameter 81mm, height 284mm.

The 700ml also fits standard car cup holders, so it’s the easier size if you’re moving between car, plane and desk.