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S'well Glass Original 18oz water bottle in lilac with silicone sleeve and glass straw

S'well Glass Original Bottle

Recommended

S'well's glass-bodied bottle - borosilicate glass with an 18/8 steel lid that screws onto the glass with no plastic threads, sealed by a silicone gasket. The water path is glass, steel, and silicone, so it is silicone-only (unlike S'well's plastic-capped steel bottles).

The verdict: Silicone only

Borosilicate glass body, an 18/8 stainless-steel lid that screws directly onto the glass - S'well explicitly uses no plastic threads - and a removable food-grade silicone gasket. The only non-metal, non-glass part in the water path is the silicone seal, so this rates silicone-only. The included straw is glass with a food-grade silicone base, and the exterior sleeve is silicone; none of that adds plastic to the drink path. This is the "glass line with an all-steel lid" that fixes the plastic-cap problem on S'well's steel bottles.

Verification: Manufacturer confirmed · Last reviewed July 2026

What it's made of

PartMaterialWater contact
bottle body
high-quality borosilicate glass
Borosilicate Glass Yes primary
lid
18/8 stainless steel; screws directly onto the glass - brand states no plastic threads
Stainless Steel
304 / 18-8
Yes primary
lid gasket
removable food-grade silicone gasket - the only elastomer in the water path
Silicone Yes seal
straw (included)
borosilicate glass straw with a food-grade silicone collapsible base; optional
Borosilicate Glass Yes primary
sleeve
food-grade silicone exterior sleeve for grip/protection
Silicone No

The glass member of the S'well line, and the one worth buying if you care about the water path (S'well's flagship steel bottles route your drink over a plastic-lined cap - see the S'well Original entry). It's a single-wall borosilicate bottle in one 18oz size, wrapped in a food-grade silicone sleeve for grip, and it ships with a glass-and-silicone straw. Being single-wall glass, it isn't insulated and it can break.

Pros

  • Steel lid screws onto the glass with no plastic threads (brand-stated)
  • Removable gasket makes it easy to clean; borosilicate resists thermal shock
  • Included straw is glass + silicone, not plastic

Cons

  • Single-wall glass - not insulated, and breakable
  • Only one size (18 oz) and pricier than most glass bottles

Notes

Common questions

Does the S'well Glass Original Bottle have plastic in it?

No petroleum plastic touches your water. On the S'well Glass Original Bottle, the lid gasket is silicone, and the rest of the water path is borosilicate glass and stainless steel.

What is the S'well Glass Original Bottle made of?

Part by part, the S'well Glass Original Bottle is: bottle body — borosilicate glass; lid — stainless steel; lid gasket — silicone; straw (included) — borosilicate glass; sleeve — silicone.

Does the S'well Glass Original Bottle have silicone in it?

Yes — the lid gasket and sleeve are silicone on the S'well Glass Original Bottle. They are seals rather than surfaces your water sits against, which is borosilicate glass and stainless steel.

Is the S'well Glass Original Bottle BPA-free?

No plastic touches your water on the S'well Glass Original Bottle — the water path is borosilicate glass, stainless steel and silicone — so BPA, which comes from polycarbonate and epoxy plastics, is not in play here.

Where is the S'well Glass Original Bottle made?

The S'well Glass Original Bottle is made in China.

Categories: Water Bottles

Sources

Every material claim above is backed by these. This is the scattered info we centralized.

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