1 / 7SIGG Gemstone IBT Insulated Bottle, 1.1 L
Bottle: The SIGG Gemstone IBT is a double-wall vacuum-insulated stainless-steel flask with a screw cap and a cup-style top. The listing describes a 1.1 L Obsidian version, with manufacturer claims of keeping drinks hot for up to 18 hours and cold for up to 24 or 25 hours. Customer feedback is positive about temperature retention and leak resistance, but durability experiences are mixed.
At a glance
- Double-wall vacuum insulation is claimed to keep drinks hot for up to 18 hours.
- Cold-retention claims differ between the listing's feature bullet and manufacturer details.
- Screw cap and leakproof design are stated, with the cap top described as usable as a cup.
- Manufacturer claims a thin inner construction makes the bottle lighter than comparable thermos bottles.
Reference price: £36.99
Price checked: 14 Nov 2026
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Pros and cons
Pros
- Stainless-steel, double-wall vacuum construction suits carrying hot or cold drinks.
- A screw cap and stated leakproof design suit transport in a bag or for outdoor use.
- Manufacturer claims a cup-style top and a wide mouth for adding ice.
Cons
- Hand washing is specified, so the bottle is not suitable for buyers who want dishwasher cleaning.
Technical specifications
17 specifications| Brand | Sigg |
|---|---|
| Model | Gemstone |
| Capacity stated in product details | 1.05 kg |
| Capacity stated by manufacturer | 1.1 L |
| Colour | Obsidian |
| Material | Stainless Steel |
| Recommended use | Water |
| Special features | Double Wall, Leakproof |
|---|---|
| Cap type | Screw Cap |
| Lid included | Yes |
| Hot retention claim | up to 18 hours |
| Cold retention claim in feature bullet | up to 24 hours |
| Cold retention claim in manufacturer details | up to 25 hours |
| Dimensions (W x H) | 8.7W x 29.3H centimetres |
|---|---|
| Weight | 464 Grams |
| Care instructions | Hand Wash Only |
| Dishwasher safe | No |
What to know before buying
Listing details to confirm
Listing details are inconsistent: the title offers 0.5 L, 0.75 L and 1.1 L options, while the product detail capacity is given as 1.05 kg and manufacturer material identifies the Obsidian bottle as 1.1 L. The cold-retention claim is also 24 hours in one feature bullet and 25 hours in manufacturer details. Confirm the selected variant and capacity before buying.
What’s in the box
- Water TankIncluded
- Cup-style topCheck selected pack
Check which accessories are included in your selected pack before buying.
Who is it for?
A good fit for
- People who want a reusable insulated bottle for hot or cold drinks and do not mind hand washing.
- Hikers, commuters or office users who value a screw cap and a top that can serve as a cup.
Less suited to
- Buyers who require a dishwasher-safe bottle.
- Anyone who needs the selected size or cold-retention duration to be unambiguous without confirming the variant.
Customer reviews on Amazon
- 5 stars
74% 74% - 4 stars
9% 9% - 3 stars
7% 7% - 2 stars
4% 4% - 1 star
6% 6%
Customer feedback praises heat retention, lightweight handling and leak resistance, and describes the bottle as worth its price. Durability feedback is mixed, with some customers expressing disappointment. These are customer perceptions, not proof of performance. For a bottle whose listing claims long hot and cold retention, the reported durability concerns are worth weighing if it will see frequent or rough use.
Positive themes
- Customers praise heat retention and lightweight handling.
- Customers report positive leak-resistance experiences and value for money.
Negative themes
- Durability feedback is mixed, with customers expressing disappointment.
Mixed feedback
- Overall feedback is favourable, but durability experiences are not consistent.
Frequently asked questions
How long does the SIGG Gemstone IBT keep drinks hot or cold?
The manufacturer states up to 18 hours hot. The cold claim is inconsistent: one feature bullet says up to 24 hours, while manufacturer details say up to 25 hours.
What capacity is this listing for?
The product details show 1.05 kg, while manufacturer material identifies the Obsidian model as 1.1 L and the title lists 0.5 L, 0.75 L and 1.1 L options. Check which variant is selected before purchase.
Can it go in a dishwasher?
No. The listed care instruction is hand wash only.
Does it include a cup?
The title says it comes with a cup, and manufacturer copy describes using the top as a cup. The supplied contents list only names “Water Tank,” so confirm the exact selected listing's package details.
Alternative options
Sigg - Aluminium Sports Water Bottle WMB Traveller Swiss Made Suitable For Carbonated Drinks Blue Green Leakproof Lightweight BPA Free 1.5L
£16.30
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£15.80
Sigg Stainless Steel Lunch Box with Leak-Proof Silicone Rim, Divided Lunch Box for Lunch and Leftovers, Silver
