Quick answer: The Hikesity Klein Blue 316L bottle is a limited-edition insulated bottle whose Klein blue color sits on the no-screw lid, not on the steel. The body is bare, mirror-polished stainless steel with a 316L inner wall. It is not a Klein bottle (that is a piece of mathematics), and it is not painted with Yves Klein's own formula — it is a Klein blue colorway, named after the shade.
The Hikesity Klein Blue 316L bottle comes in exactly three sizes — 473 ml for $59, 592 ml for $69 and 950 ml for $79 — and in all three the Klein blue lives on the lid while the body stays bare, mirror-polished steel. That one design decision explains most of what people ask us about this bottle, so this guide starts there.
Klein blue is not a Klein bottle
Search "klein blue water bottle" and you will run into a surprising amount of mathematics. A Klein bottle is a surface described by the German mathematician Felix Klein in 1882. It has only one side: no inside and no outside. You can buy glass models of one, but you cannot fill one with coffee, because there is no "inside" for the coffee to go.
Klein blue is something else entirely. It is a color, named after the French artist Yves Klein. When people say "Klein blue water bottle", they almost always mean a bottle in that shade of deep, saturated ultramarine — which is what this guide is about.
What Klein blue actually is
Yves Klein (1928–1962) spent much of his short career on a single color. Working with a Paris paint supplier, he developed a way to suspend dry ultramarine pigment in a clear synthetic binder so the paint kept the powdery, almost glowing intensity of the raw pigment instead of dulling as it dried. In 1960 he recorded the formula through a French Soleau envelope filing — often described as a patent, though it was not one — and called it International Klein Blue, or IKB.
Today "Klein blue" is used loosely for that family of intense, slightly violet ultramarines. It is worth being precise about what our bottle is and is not:
- It is a Klein blue colorway: a deep ultramarine chosen to echo the shade.
- It is not made with Yves Klein's paint formula. The colored part is a lid made of PP and silicone.
- It is not blue all over. The blue is on the lid; the body is polished steel.
Why the color is on the lid, not the steel
The Hikesity Klein Blue bottle pairs a Klein blue no-screw lid with a mirror-polished stainless steel body. Putting the color on the lid rather than coating the body changes how the bottle lives day to day:
| Color on the lid (Hikesity Klein Blue) | Color painted or coated on the body | |
|---|---|---|
| What you touch | The lid is the part your hand grabs every time you open it, so the color is where your attention already is | The color is on the part you set down on desks, car floors and trail rocks |
| Drops and scuffs | The body is bare steel, so there is no paint layer to chip | A coating can chip at the base and edges after a fall |
| Cleaning | The lid comes fully apart, so every colored part can be washed separately | The coated body needs gentler handling to keep the finish |
| Look | Deep ultramarine against a mirror-polished body — the steel reflects the blue | One solid color |
It also means the blue sits on the most mechanical part of the bottle. The no-screw lid uses Revomax's threadless lid technology: it opens with one hand, with no twisting, and comes fully apart for cleaning — unlike the threaded caps on bottles such as Yeti or Hydro Flask. If you want the mechanics, we explain the threadless design in No-Screw vs Screw-Top Lid.
What is inside the steel
Under the mirror finish, the Klein Blue bottle is built the same way as the rest of our 316L line: a 316L stainless steel inner wall and a 304 stainless steel outer wall, with double-wall vacuum insulation that keeps drinks cold for up to 36 hours and hot for up to 18 hours. The inner wall is the part your drink touches, which is why we use 316L there — we cover the difference in why 316L stainless steel is the best for your water bottle.
How to care for a Klein Blue bottle
- Lid: take it fully apart and wash each part in warm, soapy water. Let the parts dry before reassembling.
- Body: wipe the mirror-polished steel with a soft sponge. Skip steel wool and abrasive powders — they leave fine scratches that show on a mirror finish.
- Hand-wash the body. That is our recommendation for keeping the polish and the vacuum wall in good shape.
For a full routine, including odors and stains, see our guide to cleaning an insulated water bottle.
Which size to choose
| Size | Capacity | Price | Best for |
|---|---|---|---|
| 16oz | 473 ml | $59 | A small bag, a short commute, or a morning coffee |
| 20oz | 592 ml | $69 | Everyday carry — the size most people pick |
| 32oz | 950 ml | $79 | All-day hydration at a desk, in the gym or on a hike |
If cup-holder fit or weight matters, our 16oz vs 20oz vs 32oz size guide compares the three in detail. The Klein Blue is a limited edition, so when a size is gone it may not come back.
See the Hikesity Klein Blue 316L bottle →
Frequently asked questions
Is the Klein Blue bottle blue all over?
No. The Hikesity Klein Blue 316L bottle has a Klein blue no-screw lid on a mirror-polished stainless steel body. The color is on the lid only; the body is bare steel.
Is Klein Blue the same as a Klein bottle?
No. Klein blue is a color named after the French artist Yves Klein. A Klein bottle is a mathematical surface described by Felix Klein in 1882 that has no inside or outside, so it cannot hold a drink. The Hikesity Klein Blue bottle is an ordinary insulated bottle in a Klein blue colorway.
Is the lid made with Yves Klein's International Klein Blue paint?
No. International Klein Blue is the artist's own paint formula. The Hikesity lid is made of PP and silicone in a Klein blue colorway, named after the shade rather than made with his formula.
How do I clean the Klein Blue bottle?
The no-screw lid comes fully apart, so wash each lid part in warm, soapy water. Wipe the mirror-polished body with a soft sponge and avoid steel wool or abrasive powders, which scratch a mirror finish. We recommend hand-washing the bottle body.
What sizes does the Klein Blue bottle come in?
Three: 16oz (473 ml), 20oz (592 ml) and 32oz (950 ml). All three keep drinks cold for up to 36 hours and hot for up to 18 hours, with a 316L stainless steel inner wall and a 304 stainless steel outer wall.
