Hot Water Bottle with Knit Cover - Extra Large 2 Liter

Name: Hot Water Bottle with Knit Cover - Extra Large 2 Liter Hot Water Bag
Brand: Activearo
Price: 44.95 USD
Availability: InStock

Hot Water Bottle with Knit Cover - Extra Large 2 Liter Hot Water Bag

Light Pink

$44.95$74.95

Woman holding the hot water bottle in a cabin on a rainy evening

Size comparison: this 2L hot water bottle next to a standard 1L outline

Infographic: more water, more warmth, longer, with no cord and no plug

Cutaway of the hot water bottle showing cover, ribbed bottle and hot water

Close-up of the knit cover, woven patch and striped band

Hot water pouring from a kettle into the wide funnel neck

Wide funnel neck, threaded neck and screw stopper

The hot water bottle in all seven cover colors

Woman reading in bed with the hot water bottle, 2L, 6 to 8 hours

Three uses: cold feet, stiff back and cold nights camping

Comparison: heating pad with a cord versus this hot water bottle

$74.95 $44.95 Save 40%

Free shipping with UPS on every order

Buy 2+ items -10%, 3+ items -15%

Color Light Pink

Light Pink

Gray

Dark Pink

Green

Orange

Navy Blue

Light Blue

Easy 30-Day Returns Free Shipping

A small hot water bottle is lukewarm before you fall asleep. This hot water bottle with knit cover holds 2 liters, twice as much as a standard 1 liter bottle, so it gives off gentle warmth for about 6 to 8 hours, hottest in the first few, on cold feet, a stiff back or a sore stomach.

The bottle is flexible ribbed PVC with a wide funnel neck, so you can pour from a kettle with less splashing, and a stopper that screws down into a threaded neck. The soft knit cover slides over the bottle and keeps bare PVC off your skin. Fill it two thirds with hot water up to 176°F, never boiling, press the air out and screw the stopper tight. It measures about 12.2 x 7.9 in (31 x 20 cm).

Slide it under the blanket before bed, hold it on your lap on the couch or tuck it in your sleeping bag at camp. It gives you steady warmth with no cord and no plug, at home or in the tent.

Key Features:

A 2 liter capacity holds twice the water of a standard 1 liter bottle
Gives off gentle warmth for about 6 to 8 hours, hottest in the first few
A soft knit cover slides over the bottle and keeps bare PVC off your skin
A wide funnel neck makes filling from a kettle easier
A threaded screw stopper closes the neck tightly
No cord, no plug and no batteries, so it works at camp or in a power outage
Seven colors, each with a striped band on the knit cover

Activearo builds gear for the long day outdoors. Long lasting warmth on cold nights.

Free shipping in the United States and the United Kingdom.

Check our Shipping Policy for more information.

If you decide to return the items for whatever reason you may do so within 30 days from the day that you received them. Read more in our Return and Refund Policy.

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Customer Reviews

Overall rating: 4.8 / 5 from 13 reviews.

I like that the cover is part of the set rather than something to buy separately. It should make the bottle nicer to hold, while still requiring care with the water temperature.

Alex R. 5/5 November 7, 2026

Hot Water Bottle with Knit Cover - Extra Large 2 Liter Hot Water Bag

The larger size is attractive for warming up a bed before getting in. The cover adds comfort, although I would want to make sure it is easy to remove for cleaning.

Sydney C. 4/5 November 7, 2026

Hot Water Bottle with Knit Cover - Extra Large 2 Liter Hot Water Bag

The knit texture looks cozy and less clinical than a bare hot water bottle. I would choose this one as a winter gift because it feels a bit more considered.

Avery V. 5/5 November 5, 2026

Hot Water Bottle with Knit Cover - Extra Large 2 Liter Hot Water Bag

This seems like a good option for someone who wants the warmth of a traditional bottle without the exposed rubber feel. The knitted sleeve is the main appeal for me.

Ellis F. 5/5 November 5, 2026

Hot Water Bottle with Knit Cover - Extra Large 2 Liter Hot Water Bag

This has a classic winter look. It is the kind of useful gift that does not need batteries or charging, and the cover makes it feel a little more special.

Charlie V. 5/5 November 2, 2026

Hot Water Bottle with Knit Cover - Extra Large 2 Liter Hot Water Bag

The extra-large capacity is the feature that stands out, but the knit cover is what makes it appealing for everyday use. A practical pairing.

Riley F. 5/5 November 2, 2026

Hot Water Bottle with Knit Cover - Extra Large 2 Liter Hot Water Bag

This feels more giftable than the plain bottle design. The cover looks cozy and the two-liter volume should suit someone who prefers a larger warmer.

Robin M. 5/5 November 2, 2026

Hot Water Bottle with Knit Cover - Extra Large 2 Liter Hot Water Bag

I prefer this covered version for indoor use because it looks more comfortable to rest against. The two-liter size is substantial, so it is worth considering the weight when filled.

Drew M. 5/5 October 31, 2026

Hot Water Bottle with Knit Cover - Extra Large 2 Liter Hot Water Bag

I like that the cover provides a fabric layer from the start. It seems convenient for relaxing on the couch, though I would not expect the knitted sleeve to be a substitute for safe filling.

Finley C. 5/5 October 31, 2026

Hot Water Bottle with Knit Cover - Extra Large 2 Liter Hot Water Bag

The knitted cover gives this a softer, more finished look than a plain rubber bottle. The two-liter capacity is generous and the cover seems especially useful for couch or bedtime use.

Jesse M. 5/5 October 29, 2026

Hot Water Bottle with Knit Cover - Extra Large 2 Liter Hot Water Bag

The combination of a full-size bottle and a soft cover is practical. I especially like the idea of keeping it on the sofa for cold evenings.

Taylor J. 5/5 October 28, 2026

Hot Water Bottle with Knit Cover - Extra Large 2 Liter Hot Water Bag

The soft exterior looks comfortable for holding against your lap on a cold day. I would appreciate a few more close-up pictures of the opening and cover fit.

Harper J. 4/5 October 28, 2026

Hot Water Bottle with Knit Cover - Extra Large 2 Liter Hot Water Bag

The knit cover makes a simple household item feel more inviting. I would still follow the filling instructions carefully and avoid direct contact with very hot surfaces.

Reese R. 4/5 October 27, 2026

Hot Water Bottle with Knit Cover - Extra Large 2 Liter Hot Water Bag

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FAQs

Sizing can vary from piece to piece. If there's a size chart on the page, that's your best guide. Not sure, or between sizes? Email us your usual size or measurements and we'll point you to the right one. Quicker than guessing.

Yes. If it doesn't fit or isn't what you expected, send it back within 30 days of delivery for a refund or exchange.

Every piece is picked for real field use. Trail, water, and hunt, not the shelf. Check the specs on this page for the exact materials and features so you know what it's made for.

Ask us about fit, fabric, or specs, email info@activearo-outdoor.com or use our contact page and a real person gets back to you.

Once it ships, you'll get a tracking link by email so you can follow your package the whole way. You can also track anytime at activearo-outdoor.com/apps/parcelpanel with your order number.

Most of our apparel: machine wash cold, hang dry, skip the bleach and the iron. Always follow the care label on your specific item.

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Customer Reviews

Overall rating: 4.8 / 5 from 13 reviews.

I like that the cover is part of the set rather than something to buy separately. It should make the bottle nicer to hold, while still requiring care with the water temperature.

Alex R. 5/5 November 7, 2026

Hot Water Bottle with Knit Cover - Extra Large 2 Liter Hot Water Bag

The larger size is attractive for warming up a bed before getting in. The cover adds comfort, although I would want to make sure it is easy to remove for cleaning.

Sydney C. 4/5 November 7, 2026

Hot Water Bottle with Knit Cover - Extra Large 2 Liter Hot Water Bag

The knit texture looks cozy and less clinical than a bare hot water bottle. I would choose this one as a winter gift because it feels a bit more considered.

Avery V. 5/5 November 5, 2026

Hot Water Bottle with Knit Cover - Extra Large 2 Liter Hot Water Bag

This seems like a good option for someone who wants the warmth of a traditional bottle without the exposed rubber feel. The knitted sleeve is the main appeal for me.

Ellis F. 5/5 November 5, 2026

Hot Water Bottle with Knit Cover - Extra Large 2 Liter Hot Water Bag

This has a classic winter look. It is the kind of useful gift that does not need batteries or charging, and the cover makes it feel a little more special.

Charlie V. 5/5 November 2, 2026

Hot Water Bottle with Knit Cover - Extra Large 2 Liter Hot Water Bag

The extra-large capacity is the feature that stands out, but the knit cover is what makes it appealing for everyday use. A practical pairing.

Riley F. 5/5 November 2, 2026

Hot Water Bottle with Knit Cover - Extra Large 2 Liter Hot Water Bag

This feels more giftable than the plain bottle design. The cover looks cozy and the two-liter volume should suit someone who prefers a larger warmer.

Robin M. 5/5 November 2, 2026

Hot Water Bottle with Knit Cover - Extra Large 2 Liter Hot Water Bag

I prefer this covered version for indoor use because it looks more comfortable to rest against. The two-liter size is substantial, so it is worth considering the weight when filled.

Drew M. 5/5 October 31, 2026

Hot Water Bottle with Knit Cover - Extra Large 2 Liter Hot Water Bag

I like that the cover provides a fabric layer from the start. It seems convenient for relaxing on the couch, though I would not expect the knitted sleeve to be a substitute for safe filling.

Finley C. 5/5 October 31, 2026

Hot Water Bottle with Knit Cover - Extra Large 2 Liter Hot Water Bag

The knitted cover gives this a softer, more finished look than a plain rubber bottle. The two-liter capacity is generous and the cover seems especially useful for couch or bedtime use.

Jesse M. 5/5 October 29, 2026

Hot Water Bottle with Knit Cover - Extra Large 2 Liter Hot Water Bag

The combination of a full-size bottle and a soft cover is practical. I especially like the idea of keeping it on the sofa for cold evenings.

Taylor J. 5/5 October 28, 2026

Hot Water Bottle with Knit Cover - Extra Large 2 Liter Hot Water Bag

The soft exterior looks comfortable for holding against your lap on a cold day. I would appreciate a few more close-up pictures of the opening and cover fit.

Harper J. 4/5 October 28, 2026

Hot Water Bottle with Knit Cover - Extra Large 2 Liter Hot Water Bag

The knit cover makes a simple household item feel more inviting. I would still follow the filling instructions carefully and avoid direct contact with very hot surfaces.

Reese R. 4/5 October 27, 2026

Hot Water Bottle with Knit Cover - Extra Large 2 Liter Hot Water Bag