SIGG Gemstone IBT Selenite Insulated Bottle

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Product guide

SIGG Gemstone IBT Selenite Insulated Bottle

The SIGG Gemstone IBT Selenite is a vacuum-insulated stainless-steel bottle with a screw cap that doubles as a cup. The listing describes it as suitable for hot and cold drinks, but its capacity is not consistent across the product details, so confirm the selected size before buying.

At a glance

Double-wall vacuum insulation is listed for hot and cold drinks.
The screw cap is described as leakproof and can be used as a drinking cup.
A wide mouth is described as making it easier to add ice.
The manufacturer says the bottle is made from 18/8 stainless steel and is BPA-free.

Price

£24.10Save 35%

Reference price: ~~£36.99~~

Price checked: 14 Nov 2026

View offer Ahead of Black FridayExplore the selection

Often bought together

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Pros and cons

Pros

Cap that can serve as a cup adds a drinking option without needing a separate cup.
The hand-wash-only care requirement is clearly specified.
The listing gives separate hot and cold temperature-retention claims.

Cons

Hand washing is required rather than dishwasher cleaning.

Technical specifications

17 specifications

Identity
Brand	Sigg
Model	Gemstone Ibt Selenite
Colour	Selenite
Age range	Adult

Insulation and closure
Temperature retention	Hot 18 Hours, Cold 25 Hours
Cap type	Screw Cap
Lid	Yes

Materials and care
Material type	Other
Care instructions	Hand Wash Only
Dishwasher safe	No

Dimensions and weight
Dimensions (W x H)	8.7W x 29.3H centimetres
Weight listed	1.01 Pounds
Base diameter	3.4 Inches

Other details
Recommended use	Water
Pattern	Solid
Theme	Military
Country of origin	China

What to know before buying

The stated temperature-retention durations are manufacturer claims, not independently verified measurements.

Listing details to confirm

Listing details are contradictory or unconfirmed: the title offers 0.5L, 0.75L and 1.1L, the manufacturer description specifies 1.1 L, and the details field gives a capacity of 1.05 kg, which is a mass unit rather than a volume. Hot retention is stated as 18 hours, while cold retention appears as both 24 hours and 25 hours. Confirm the selected bottle size and applicable cold-retention claim before buying. The description also calls the body 18/8 stainless steel while the materials field says “Other”.

What’s in the box

Included

Top
Bottle

Who is it for?

A good fit for

People who want an insulated bottle whose cap can also be used as a cup.
Buyers who prefer a screw-cap bottle for carrying hot or cold drinks.
Those willing to hand wash a stainless-steel flask to avoid dishwasher cleaning.

Less suited to

Anyone who needs a confirmed capacity without checking the selected listing variant.
Buyers who require a dishwasher-safe bottle.

SIGG Gemstone IBT Selenite Insulated Bottle · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.3 / 5 · 511 ratings

5 stars69%69%
4 stars14%14%
3 stars8%8%
2 stars2%2%
1 star7%7%

Customer feedback highlights perceived quality, temperature retention, design, capacity and functionality. Those comments may matter to buyers using the bottle for tea or coffee, though they do not confirm the listing’s inconsistent capacity or temperature-duration figures. Durability feedback is mixed, including reports of sturdiness as well as concerns about the inner plastic cup and metal sleeve coming apart.

Positive themes

Customers praise perceived quality and temperature retention.
Customers like the design, usable volume and functionality.

Mixed feedback

Durability feedback varies. Some customers describe the bottle as sturdy, while others report the inner plastic cup and metal sleeve coming apart.

Frequently asked questions

What is the bottle’s capacity?

The listing is inconsistent. It gives 1.1 L in the manufacturer description, 1.05 kg in a capacity field, and multiple sizes in the title. Confirm the selected variant’s volume before ordering.

How long does it keep drinks hot or cold?

The listing states hot for up to 18 hours. Cold retention is given as both 24 and 25 hours, so treat the cold duration as unconfirmed.

Can the cap be used as a cup?

Yes. The listing describes the top as usable as a coffee or tea cup.

Is it dishwasher safe?

No. The care details say hand wash only.