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Rated 1 out of 5 stars

I notice that the good reviews are several years old. I purchased a Kulkuf unit 2 moonths ago for my wife, but she found it too bulky. I tried contacting the company well within a month to arrange... See more

Rated 1 out of 5 stars

Product is bulky and heavy to wear - which I could deal with if it worked - battery did not last very long - trying to return it has so far been a nightmare - no response to emails - the phone number... See more

Company replied

Rated 1 out of 5 stars

I was really hoping to be able to leave a 5 star review and say that it really helped with my hot flashes and was the best product. Unfortunately, after wearing it for about 5 days now it hasn't hel... See more

Company replied

Rated 5 out of 5 stars

For years I was dealing with hot flashes without any relief. Everytime I started to feel hot, I would have to excuse myself because of the excessive sweating and exhaustion. Kulkuf has definitely been... See more

Company details

  1. Health and Beauty Shop

Written by the company

Powered by patented Climacon technology, the KÜLKUF wristband allows you to take control of your core temperature. Stop hot flashes within seconds with the push of a button.


Contact info

2.1

Poor

TrustScore 2 out of 5

29 reviews

5-star
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1-star

Hasn’t replied to negative reviews

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Rated 1 out of 5 stars

Their customer service does not exist anymore!!

I notice that the good reviews are several years old.
I purchased a Kulkuf unit 2 moonths ago for my wife, but she found it too bulky. I tried contacting the company well within a month to arrange a return, and have heard nothing from them after 4 attempts to contact them. As best I can tell, there is NO customer service! (I gave them 1 star only because "none" was not an option.
I recommend trying to contact them yourself prior to purchasing their product. Otherwisee, only buy if you're certain you want this, because there's apparently no going back. Very frustrating!!! Caveat emptor!

August 10, 2025
Unprompted review
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Rated 5 out of 5 stars

Customer service has been amazing!!

Customer service has been amazing!!! The cuff definitely gets cold. Unfortunately, it did not lessen the severity of my hot flashes. It is also quite large on my tiny 100-pound frame. I think it is certainly worth a try if you suffer from hot flashes…it just may work for you.

April 5, 2023
Unprompted review
Rated 3 out of 5 stars

Do not recommend

Update: September 2023. The fan in my Kulkuf stopped working in August after owning it for less than a year and only using it intermittently. I contacted the company and they sent a replacement after a few weeks, but it was the wrong size. I have asked them twice to send the correct size and they have stopped responding. So I have no working device and I consider it a waste of money since it lasted less than a year. I'm unable to recommend the Kulkuf based on my experience. There are competitors on the market now so I may try one of those.

Original review: I have been using the Kulkuf for a few weeks now and the experience has been mostly positive. Shipping is from India and took less than a week to reach me in the U.S. The first unit I received stopped working properly shortly after I began using it. I was able to have a replacement shipped quickly, which I really appreciate; however, I had to pay the cost of shipping the faulty item, which is unheard of in my experience. The manufacturer should absolutely cover the cost of returning a defective unit (the post office even commented on this!), and for this reason, I have taken off one star in my review.

As to the cooling properties, I find that the wristband does help some with cooling. I had expected to be able to wear it to bed; however, because it cannot be operated under the covers, I am reluctant to fall asleep with it on and accidentally activate it under the covers during the night if I wake up and turn it on half-asleep. For this reason, I keep it on my nightstand but would have to wake up enough to reach for it, put it on, turn it on, and then take it back off once done. This is the reason for reducing my review by a second star.

I only wear the wristband at home (I work at home). I would probably wear it other places if it were more streamlined, but the current version is bulky, as other reviewers have noted. I don't use it during workouts as I wouldn't want it to get sweaty (plus, you're supposed to get hot during a workout). I use it for times when I don't necessarily expect to get hot.

I wish it had a battery indicator, but that would require some type of display. I just have to remember to charge it every couple of days. It comes with a small travel bag which is nice.

September 13, 2022
Unprompted review
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Reply from Kulkuf

Hi Jill. Thank you for your feedback. As we are in India now we are not able to process the reverse shipping and we are sorry for that discomfort. In next couple of months we will be having operations in the US and all this process will be much more seam less. On the product side we are launching our next version addressing design, size and working on a low battery indicator. One the new design is done we will send you a replacement.

Rated 4 out of 5 stars

The bottom line

The bottom line - this works for me. I've been having serious hot flashes all day long, and it makes my job as a teacher rather miserable! Yes, the cuff is bulky, but the benefits for me outweigh the problem. I did contact Kulkuf to tell them that the cuff did get very hot one night, but haven't heard back from the company. I also think the velcro could be more secure. I have had it fall off a few times, and I don't want it to break hitting the ground!
Am I glad I bought it? Yes. Could it continue to be improved? Yes.

September 14, 2022
Unprompted review
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Reply from Kulkuf

Dear JLK. Thank you for your kind words and glad that we took care of your hot flashes. Please write to us @ hello@kulkuf.com. We are working on a new design which will be much smaller and will not use any velcro. It will be ready by 15th Jan and we will send you the replacement with the new design.

Rated 1 out of 5 stars

don't waste your time or money

Product is bulky and heavy to wear - which I could deal with if it worked - battery did not last very long - trying to return it has so far been a nightmare - no response to emails - the phone number listed on the website is busy all the time - I have yet to figure out how I will be able to get my money back. Do not recommend!

August 17, 2022
Unprompted review
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Reply from Kulkuf

Hi Elizabeth, We are sorry that the product did not work for you. We have replied to your mail about the return process. Typically it takes for us 24 hours to respond. We have refunded your order.

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Rated 5 out of 5 stars

Amazing.works great

Amazing.works great. I am in winter so I'll see how it goes in summer but so far all good.

June 17, 2022
Unprompted review
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Reply from Kulkuf

Dear Suzi. Thank you for your review. We are glad it's working for you. Whether its summer or winter the device cools to the same temperature.

Rated 5 out of 5 stars

Stops hot flashes within Seconds

The Kulkuf stops my hot flashes within seconds. It is wonderful to have when in tight spaces with others and at night to keep sleeping. When sleeping you have to remember not to block the cooling mechanism else it will get very hot. Very easy and intuitive to use right out of the box.
-The material is rough and not washable so it is not suitable for exercising.
-It is too bulky for typing, but you can keep it close by to use.
-I would recommend a design without hook & loop closure because it will eventually wear out.
-I would be happy to be a Tester for any design changes.

June 15, 2022
Unprompted review
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Reply from Kulkuf

Dear Sunrise. Thank you for your review. We are glad that KULKUF works for you.
We would take your offer we are testing some new designs. We will get in touch with you. Can you please email us your details to hello@kulkuf.com

Rated 5 out of 5 stars

It worked, but too bulky…

I liked the concept of the bracelet, but it was much too bulky for me. It turned cold quickly but almost to the point of being painful (for a brief second) but after that, it cooled me down. Unfortunately, I returned if because of the bulkiness….waiting for my refund now.

Received my refund quickly. Great customer service, I wish the bracelet was more to my liking, but the return process was easy.

June 13, 2022
Unprompted review
Kulkuf logo

Reply from Kulkuf

Dear EPG. Thank you for your review. We are developing some new designs which are not bulky and will keep you updated with the new designs.

Rated 3 out of 5 stars

I was super excited to get my kulkuf…

I was super excited to get my kulkuf the first few times I used it I loved it. I wear it everyday but lately when I use it the Velcro doesn’t stick and after I use the blue cooling feature it then gets really hot on my wrist

April 12, 2022
Unprompted review
Kulkuf logo

Reply from Kulkuf

Dear Dtang. We are glad that Kulkuf was working for you earlier. Thank you for writing to us about the problems and we have already shipped the replacement. Hope new Kulkuf keeps you excited.

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Rated 1 out of 5 stars

Do not see any difference

I was really hoping to be able to leave a 5 star review and say that it really helped with my hot flashes and was the best product. Unfortunately, after wearing it for about 5 days now it hasn't helped at all and I haven't seen any difference. Contacted the company to request a refund Friday and still haven't heard back. Hoping the money back guarantee isn't just a gimmick to get you to buy the product. Glad the product works for some but hasn't worked for me.

The company has reached out and didn't receive my original contact so gave me another contact to get the process going for a refund. The customer service gets a 5 but since the product didn't work for me and I so hoped it would, I am leaving with a one star for the product.

October 25, 2021
Unprompted review
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Reply from Kulkuf

Hi Krista,
We have not received your refund request. Can you send us a mail with your order details to hello@kulkuf.com. We should be able to proceed with your refund once we receive back the product.

Rated 4 out of 5 stars

Help! Thanks so much

Hi, I have been using wristband for 3 weeks now with an amazing results! I love it, it has helped me a lot with my hot flashes! It really saved my life! Great support service as well!

Aisen Chacín

September 26, 2021
Unprompted review
Rated 4 out of 5 stars

Bad start, got better

Bought this on June 28. Arrived a 4 days later. It worked once in the night then failed to work. Kulkuf replaced it and so far so good....

July 10, 2021
Unprompted review
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Rated 5 out of 5 stars

Buy this product

Buy this product! I was very skeptical about this product but read through the return policy and thought I can always return it if it doesn’t work. Well I was wrong to be skeptical. THIS WORKS. I have been suffering from just awful hot flashes 5-6 times a day for a couple of years. Over the counter meds work somewhat but not completely and I can’t take HRT. So I carried a little fan with me everywhere. But the Kulkuf is amazing. It really works. When I feel one starting, I quickly put it on and press the button. It stops it before it has a chance to really start. On the coldest setting it can be a little painful on your wrist but it goes away. It turns off automatically after 2 minutes. That’s enough time for it to work. Battery is long lasting and charges very quickly. I highly recommend Kulkuf!

July 1, 2021
Unprompted review
Rated 5 out of 5 stars

Gamechanger for Neurological Conditions

I have a neurological condition. It causes my body to be unable to regulate its temperature normally. I run super hot in the summer and get chilled to the bone in the winter. My symptoms are particularly worse in the hotter months. After doing some research on thermal therapy, I decided to give the Külkuf a try. It has been a GAMECHANGER for me. I use it on each wrist before getting out of bed in the morning. It helps me regulate my temperature better throughout the day. I use it whenever I start to feel overly hot. It's also great after exercise to cool down quickly. I wish I had found this sooner. I no longer have to dread summer weather. I would HIGHLY recommend this device for anyone who has a neurological condition.

June 13, 2021
Unprompted review
Rated 5 out of 5 stars

ABOVE AND BEYOND

ABOVE AND BEYOND

I just recived my Kulkuf and I am amamaized by the level of customer service.

1. They mad it to where I can have multiple batteries
2. They customized it to where it does not shut off every 5 minutes
3. I live in America and this was all done by email

Way to go!

May 17, 2021
Unprompted review
Rated 5 out of 5 stars

No More Hot Flashes

I was desperate for help with my hot flashes. I tried KULKUF and was so surprised, not only did it keep me much cooler but it also helped with my anxiety related to always being hot around my colleagues. This is a must for all women with hot flashes. No more fans for me!!!

April 22, 2021
Unprompted review
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Rated 5 out of 5 stars

Woohoo technology!

I use to cramp my refrigerator with a dozen ice packs to get me through the day. Thanks to Kulkuf, I now have a much better way to deal with those nasty hot flashes! Yay technology!

April 21, 2021
Unprompted review
Rated 5 out of 5 stars

When I started experiencing hot flashes…

When I started experiencing hot flashes for the first time last year, I was worried about not being able to live my life the way I wanted. That is when I discovered the Kulkuf! Life has been a breeze!

April 21, 2021
Unprompted review
Rated 5 out of 5 stars

A must have

For years I was dealing with hot flashes without any relief. Everytime I started to feel hot, I would have to excuse myself because of the excessive sweating and exhaustion. Kulkuf has definitely been a major improvement in my life. The easy button system allows me to cool down anytime, anywhere!

April 21, 2021
Unprompted review

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