Cassandra Hot Water Bottle, Smooth Surface Both Sides, 1.8 Litre, 5 Year Cassandra Guarantee, Colour Received Varies

A good quality hot water bottle that reassuringly exceeds required British standard BS1970/2012. Kept under a duvet or plenty of blankets the bottle retains a reasonable measure of heat until the morning, which saves the unwelcome chore of having to refill it midway through the night. Its first use is obviously the bed, but there's no reason why it can't be used alongside a blanket, or even by itself, while sitting watching TV or whatever as a cheaper alternative to having heating on. It also saves on the expense of an electric blanket in bed and avoids lying in an electrical field so close to the body. Ribbing on one side allows a choice of temperature variants, which if initially favouring the ribbed side can then be flipped for the warmer underside when desired. It'll take most of a standard-sized kettle, heated to a reasonable degree, but not boiling point as the safety instructions advise. Filling the bottle is safe and relatively quick too. There's a nice solid piece to grip around the neck, and the hole where the stopper goes is sufficiently recessed and large enough to allow sensible pouring without splashback. How well it'll last over time remains to be seen, but with careful use and storage, and a five-year guarantee, it should last for a fair time. I see from the advertisement that there may be some confusion as to what colour one receives as it initially appears that either a blue, red or pink one can be ordered. However, it clearly states that the colour received varies. I'm sure the colours used are for illustrative purposes only to show not only what colours may be received but also to mark the differentiations in product type as there's three variants available: smooth surface on both sides, ribbed surface on both sides, and ribbed on one and smooth on the other (as I ordered and of which this review pertains to). Clicking on the different colours brings up the product types and not necessarily the colour one will receive. Personally, I'm not bothered what colour I receive as a hot water bottle is hardly a fashion statement and is just something to use to keep me warm at night. As long as I receive the correct product type then that's all I'm bothered about (which I did). An all-round excellent buy as far as I'm concerned. UPDATE I've now been using this hot water bottle on a daily basis throughout the winter and can say it continues to perform exceptionally well. Unless the weather is particularly cold and into the minuses, I find I'm getting about eight hours of heat from it (strictly via the bottle, without a cover). Obviously, by the time I get up in the morning the bottle is lukewarm, but with the heat it's maintained in the bed overnight and my own body temperature I'm always adequately warm. There's only been one night that I felt inclined to get up to refill it, and I probably didn't need to. Also, the bottle has shown not the slightest sign of leakage from the stopper or perishing of the rubber. I expect that it will last for the guarantee period but I've decided I'm going to replace it every year or two anyway just to be on the safe side as I tend to use water as hot as I can get away with without it being boiling. It's such a good price and so conveniently available from Amazon that I won't miss spending that amount every once in a while. I'll definitely be ordering another Cassandra hot water bottle though providing they're still available. What I have found is a renewed joy in having a hot water bottle. I seem to sleep better than I did when using an electric blanket, and there's a certain pleasure curling up in a bed warmed this way. Even if current high energy prices were to fall I'll still stick with a hot water bottle. I'm immensely pleased with my purchase.

I have poor blood circulation and my feet are almost always cold. I ordered this particular bottle because it was cheap. I admit I started having second thoughts before it arrived and even expected it to have a design or functional flaw. It didn't. I've been using it every single day for almost a month now. It is amazing. I've been abusing it as well, as I fill it several times a day and I sometimes pour in almost boiling water. It is still in perfect shape and doesn't show any signs of wear. When I work from home, I put it under my desk with aluminum foil underneath, so the floor doesn't absorb its heat too fast, and I keep my feet on it. It not only warms up my feet, but my entire body. When I go to sleep, I place it under the covers, some distance away from me, so I don't end up squashing it by mistake. Needless to say, it warms the whole bed, and sometimes it is still a bit warm in the morning. I now believe it is so cheap only because it doesn't have a fancy fleece cover like most similar bottles. It is durable and looks like it's going to last a good while. I give it 5 stars for Comfort and Value for Money. I don't know how to rate Pain Relief, as I haven't been in pain, but I assume it can be used to alleviate muscle cramps or lower back pain, etc.

Great bottle, good size, works well. But this is my third purchase and looking back through my order dates mine have started leaking after 1, or 1.5 years. So I'm not convinced on the 5 year claim. But £5 is fine to pay 1-2 years of use.

Great product to replace an existing cover. Good quality and good value

Came very quickly. Very good and sturdy.

Good value for money. Good size, top seems very secure so no chance of hot water scalding.

Great hot water bottle I have bought this make before as I find them one of the best I have some with ridges and smooth because they make the bed very cosy they are made very well made of very thick rubber and has a safety date stamp the side is just right for my arthritis and is very soft

This product is incredibly dangerous and should be avoided. The poor quality led to it tearing, causing hot water to splash all over my hand. My hand was stinging in pain the entire night! Do not risk your safety with this product! This hot water bottle is poorly made and extremely dangerous, and I strongly advise against purchasing it. Within just a few uses, the material showed signs of wear and tear, leading to a terrifying experience. The hot water bottle tore unexpectedly, causing scalding hot water to gush out all over my hand. The pain was excruciating, and I spent the entire night in discomfort as my hand throbbed from the burns. I was fortunate that it didn't cause more serious injury, but the risk it poses is unacceptable. The product claims to be safe and durable, but it couldn't be further from the truth. The materials feel flimsy and cheap, and there is absolutely no way this product should be holding hot liquids. It is clear that no thought was put into ensuring the safety of users. I wouldn't wish this experience on anyone and am genuinely concerned for others who might buy this hot water bottle, assuming it to be a safe option for comfort or pain relief. Moreover, when I reached out to the customer service team to address the issue, I was met with indifference and no meaningful resolution. Their lack of concern for the potential injuries their product could cause only adds to the frustration. A product that causes physical harm should be immediately recalled, not sold to unsuspecting customers. In short, do not take the risk with this hot water bottle. The cheap construction and lack of safety measures make it a hazard. There are far better options out there that won’t put your safety at risk. Save yourself the pain and avoid this dangerous product at all costs!

These hot water bottles are the best if you want real heat. Both sides of the bottle are smooth, without any texture. Texture in a hot water bottle does not allow the heat of the water to come through at the temperature you fill with. Yes, you have to be careful with this bottle, because it does give out excellent heat.

Great quality. I like the smooth surface.

Works like I expected. I hope it lasts as long as the old one - over 10 years!

Good quality rubber, nice and thick with conformity to BS. Well made item, would recommend.

Heat last only 2 hours. I put a cover on but doesn't help.