# ONEVER 2L Stainless Steel Thermal Flask

The ONEVER 2L stainless steel thermal flask is a large-capacity vacuum-insulated bottle with a screw cap, carry handle and claimed adjustable shoulder strap. Its size suits carrying drinks for longer outings, while its listed weight and footprint are worth considering when packing it.

- [Original product page](https://bargainpostbox.co.uk/product/onever-2l-stainless-steel-thermal-flask)
- [View offer](https://bargainpostbox.co.uk/visit/onever-2l-stainless-steel-thermal-flask)
- Market: UK
- Language: en-GB
- Currency: GBP
- Brand: ONEVER
- Model: 2l Large Stainless Steel Thermal Flask
- Category: Home & Kitchen > Cookware & Kitchenware > Tableware & Drinkware
- Price: 20.39 GBP
- Previous price: 23.99 GBP
- Discount: 15%
- Price checked: 2026-11-14T10:10:08.274Z
- Rating: 3.9 / 5
- Reviews: 146

Prices and deal status are the latest recorded data, not a guarantee of availability. Confirm the price and availability with the store.

## At a glance

- The 2-litre capacity is intended to reduce the need for frequent refills.
- The listing claims a six-layer vacuum insulation structure and retention of cold drinks for up to 24 hours and hot drinks for up to 12 hours.
- A wide mouth is described as convenient for filling and cleaning, including adding ice.
- The listing describes a carry handle and adjustable shoulder strap for transport.

## Pros

- Large 2-litre capacity for carrying multiple servings.
- Screw cap and vacuum-insulated stainless steel construction are specified.
- Listed dimensions and weight help assess whether its size suits your bag or outing.

## Cons

- Not dishwasher safe, according to the listing.
- The 2-litre capacity and listed 500-gram weight make it a substantial bottle to carry when full.

## Specifications

### Identity
- Brand: ONEVER
- Model: 2l Large Stainless Steel Thermal Flask
### Capacity and construction
- Capacity: 2 litres
- Material: Stainless Steel
- Insulation: Vacuum Insulated
- Colour: Black
- Pattern: Solid
- Cap type: Screw Cap
- Lid: Yes
### Dimensions and care
- Dimensions (W × H): 15W x 31.8H centimetres
- Base diameter: 10 Centimetres
- Weight listed: 500 Grams
- Dishwasher safe: No
### Use and origin
- Recommended use: Hot Drinks
- Age range: Adult
- Country of origin: China

## Before you buy

- The claimed hot and cold retention times are listing figures, not independently established performance. Customer feedback is mixed on how long drinks stay warm, so temperature retention may matter for your intended use.

## In the box

- Water bottle (Included)

## A good fit for

- People who want to carry a large supply of hot or cold drinks for work or outdoor activities.
- Buyers who value a wide-mouth bottle and a carry handle for filling and transport.

## Less suited to

- Anyone who needs a dishwasher-safe bottle.
- Buyers seeking a compact, low-capacity flask.

## Customer feedback

Customer feedback describes the thermos as good quality, while reports about temperature retention are mixed: some say drinks stay hot all day and others say warmth is lost by teatime. This matters if you expect the claimed hot-retention period to cover a full day. The overall rating distribution is mixed, so it does not establish consistent performance for every buyer.
- Positive themes: Customers describe the thermos as good quality.
- Mixed feedback: Temperature retention receives mixed feedback, with reports ranging from drinks staying hot all day to warmth fading by teatime.

## Frequently asked questions

### How much does the ONEVER flask hold?
The listed capacity is 2 litres.
### How long does it claim to keep drinks hot or cold?
The listing claims up to 12 hours for hot drinks and up to 24 hours for cold drinks. Customer feedback reports mixed warmth retention, so treat these as claims rather than guaranteed results.
### Can it go in the dishwasher?
No. The listing says it is not dishwasher safe.
### What comes in the package?
The included-components field lists one water bottle. A carry handle and adjustable shoulder strap are described in the feature text, but the package list does not confirm the strap as a separate included item.

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## Images

![ONEVER 2L Stainless Steel Thermal Flask — 1](https://bargainpostbox.co.uk/i/o3SlUMDt_bceWoryYEMPoJoUadS6lfzcwtNtxS22T5At_jSN0Spk1KnaPwJyZ86xqOZdiQP5huYnFbzFpADUnm0JjEnvUFBUfU1J1DdCc8NXWcIgHhZcL0bf.jpg)

![ONEVER 2L Stainless Steel Thermal Flask — 2](https://bargainpostbox.co.uk/i/cXNwMuvczwkOmvZZHqq7ReJ9HxH5pAsWU8Pq8tzT22JsruxLa37WdHFGHb_wkj3QyqUuvpQz3pB9izKscsR7HiVKDWSRPdAi09VScJn5zh20o-cYae6qEhWJ.jpg)

![ONEVER 2L Stainless Steel Thermal Flask — 3](https://bargainpostbox.co.uk/i/Jjk3EHE9RRBpgvxKleSnzWVyUKpjEaK8awjuXGYRIZnQ_NI6SQ6yuUk-5C0H6vKy02U-eap6EKofFQ8xQY-PpZ9btxPC3Yr-zweGzCVNoKMvVCSYwfGOtJLh.jpg)

![ONEVER 2L Stainless Steel Thermal Flask — 4](https://bargainpostbox.co.uk/i/RJKUU-e-uf-KADUiAj8k722-2MWMFM1lyqiE9ZeQV2TDMHJ2IrgdNvN4ACcUj6LIJWVzYmvTRYd7uYWcySh5ynqJG3LVoLE_fotoQl9x6tICRkigfnGYNB_R.jpg)

![ONEVER 2L Stainless Steel Thermal Flask — 5](https://bargainpostbox.co.uk/i/JE7J-v-10E4_HrR4V17e9WwnYrzuCoFFezSrSU6Re6He2tZ-LpCZ1RxMjLPXssOWHcq0l8Sw_xsv0eSGw-RjRWj6PzY9BkHDf-VouIBkxjQGVYVn_RXvhdWN.jpg)

![ONEVER 2L Stainless Steel Thermal Flask — 6](https://bargainpostbox.co.uk/i/vRk_-iJhyHMrlykSGQDkogsM7A1tZnMmivIeJj0WYfoBdgt8UBmmfHF9dLbNhoBYf04F3vJJ-THlplpsEy93VBIa8WH_JS-TVd_EmvqTHk6rIuFc5NoOWyV0.jpg)

![ONEVER 2L Stainless Steel Thermal Flask — 7](https://bargainpostbox.co.uk/i/pBlntAYziIBEaHpmBD6tsw6u8Lrr-ZtP7l2IbcKksorD9imOTIRYB2hPEW28mPCbCd9HbyJoFHcYu2JH44LMxFXcxRb08oZ50yI8g8GEGdLg5nOsQpv2CMKY.jpg)