Science behind Portable Water Purifier

We have run meticulous laboratory tests to ensure our UV Light in our portable water purifier makes water from ANY source (free of debris) 100% safe to drink. See the full lab report here.

CrazyCap uses advanced 278nm deep UV LED to effectively sterilize water. See the charts above showing a significant reduction of bacteria in the contaminated water in both Normal and Crazy Mode Sterilization. The spectrum (260nm to 280nm) of light is found to have maximum disinfection capability.

Thanks to the recent development in LED technology, this special spectrum of light can now be produced without using toxic Mercury. When the Deep UV light enters the microbial cell, it destroys the active core (nucleic acids). Cells without the active core will no longer be viable.

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84 Product Ratings and Reviews

4.5

Overall Star
Rating

5 Shopper Approved - Review Star
68
(81%)
4 Shopper Approved - Review Star
6
(7%)
3 Shopper Approved - Review Star
4
(5%)
2 Shopper Approved - Review Star
0
(0%)
1 Shopper Approved - Review Star
6
(7%)

About this Company

Science behind Portable Water Purifier

We have run meticulous laboratory tests to ensure our UV Light in our portable water purifier makes water from ANY source (free of debris) 100% safe to drink. See the full lab report here.

CrazyCap uses advanced 278nm deep UV LED to effectively sterilize water. See the charts above showing a significant reduction of bacteria in the contaminated water in both Normal and Crazy Mode Sterilization. The spectrum (260nm to 280nm) of light is found to have maximum disinfection capability.

Thanks to the recent development in LED technology, this special spectrum of light can now be produced without using toxic Mercury. When the Deep UV light enters the microbial cell, it destroys the active core (nucleic acids). Cells without the active core will no longer be viable.

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CrazyCap 2 -Cap Only
CrazyCap 2 -Cap Only
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Anonymous Customer - 04/18/2022

Very useful, both at home and on travels.

It is exactly as described. Very happy with my purchase and consider buying one of the other caps as well.


CrazyCap 2 -Cap Only
CrazyCap 2 -Cap Only
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M - 04/16/2022

Taking it backing on the Camino de Santiago! Peace of mind for my trip. I really feel like it makes our well water taste better too! I love it! Would highly recommend it to others!


CrazyCap 2 -Cap Only
Shopper Approved - Verified Customer
CrazyCap 2 -Cap Only
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T.R. - 12/12/2021

Fantastic product so far, already noticing a difference in taste

T.R.

12/12/2021 - IN

Very easy and helpful!


CrazyCap 2 -Cap Only
Shopper Approved - Verified Customer
CrazyCap 2 -Cap Only
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Sue S - 11/20/2021

I really like the ingenuity of this product!


CrazyCap 2 -Cap Only
Shopper Approved - Verified Customer
CrazyCap 2 -Cap Only
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Matthew C - 11/05/2021

Great idea.

Works as advertised. Very easy.

Matthew C

11/05/2021 - ON

Easy and friendly.


CrazyCap 2 -Cap Only
Shopper Approved - Verified Customer
CrazyCap 2 -Cap Only
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Catherine - 09/04/2021

I purchased the original cap and bottle for my son a year ago. He uses it every day. The rechargeable battery in the cap lasts only one year. These are replacement caps.

Catherine

09/04/2021

Fine,


CrazyCap 2 -Cap Only
Shopper Approved - Verified Customer
CrazyCap 2 -Cap Only
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John G - 08/12/2021

10 year warranty is outstanding

John G

08/12/2021 - Maryland

Ten year warranty is a real plus.


CrazyCap 2 -Cap Only
Shopper Approved - Verified Customer
CrazyCap 2 -Cap Only
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Kim B - 08/11/2021

love it

Kim B

08/11/2021 - ON

Very happy


CrazyCap 2 -Cap Only
Shopper Approved - Verified Customer
CrazyCap 2 -Cap Only
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Aaron M - 07/24/2021

Did not Fit

The CrazyCap 2 (Cap Only) did not fit my CrazyCap bottle. But customer service was nice and they are sending me a new one.

Company Response

Hi Aron, 

Please accept our apologies for the negative experience you had with the product.

We hope the new cap you have received is fitting your bottle and working as expected. 

Please reach out to us at [email protected] in case of any other questions or concerns. 

Thank you! 


CrazyCap 2 -Cap Only
Shopper Approved - Verified Customer
CrazyCap 2 -Cap Only
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Tom H - 07/12/2021

Healthy water

I feel safer now, drinking good clean healthy water!

Tom H

07/12/2021 - Wisconsin

Easy and good


CrazyCap 2 -Cap Only
Shopper Approved - Verified Customer
CrazyCap 2 -Cap Only
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Gloria H - 06/06/2021

Crazy Cap doesn’t fit in 25oz S’well bottles

On the website, it says that these caps for in other bottles, like S’well, it it doesn’t say that it only fits the 17oz bottles, not the 25oz. So I have a S’well bottle that the Crazy Cap won’t fit on. (Bottle was personalized so I can’t return). I would’ve ordered bottle with Crazy Cap but they only had 2 styles available in 25oz.


CrazyCap 2 -Cap Only
Shopper Approved - Verified Customer
CrazyCap 2 -Cap Only
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Lara H - 06/01/2021

A pair of duds

Ordered two caps to fit on SWELL bottles. They fit great. Charged the first one and it was green and then placed on my bottle and tapped...nothing; no LED lights; tried to tap again and nothing; tried charging again...nothing. Tried the other Cap....same thing. I thought I was doing something wrong so i emailed CC and they sent some videos; I was doing everything that I was supposed to; not sure if I just got two duds but Crazy Cap requested that I send in a video to share, which I did and have not heard back; i will probably just ask for my money back and return these. Disappointing. Seems like a good product and was looking forward to cleaning tap water for better taste. Too bad

Company Response

Hi Lara,

Thanks for sharing your feedback. We are sorry your experience didn't match your expectations. It was an uncommon instance. 
Our customer service team is already in touch with you and we will make sure to provide you the solution.

If there is anything else, we can do to help, please let us know. 

CrazyCap Team

Lara H

06/01/2021 - Virginia

Submitted a video showing the issue and have not heard back


CrazyCap 2 -Cap Only
Shopper Approved - Verified Customer
CrazyCap 2 -Cap Only
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Lori R - 06/01/2021

Top Notch Customer Service.

A mark of a quality company is it's customer service. I ordered a CrazyCap and upon delivery it wasn't working. I immediately contacted the company and they were very responsive! They chatted with me, no wait. Verified the issue quickly and immediately sent a replacement which works great!!! It is possible for any company to have an occasional product issue, how they handle it is important. They have won my loyalty!

Company Response

Hi Lori,

Thank you for taking the time to share this positive rating! We will make sure to share this with the customer service team to let them know to keep up the amazing work.
Our customer service team will be happy to hear what you wrote.

If there anything else, we can do to help, please let us know.

CrazyCap Team

Lori R

06/01/2021 - Pennsylvania

none


CrazyCap 2 -Cap Only
Shopper Approved - Verified Customer
CrazyCap 2 -Cap Only
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Alexa C - 05/27/2021

great buy

Company Response

Hi Alexa, 

Thanks for sharing your 5-star review with us and the community. 

If there is anything else we can do to help, please let us know.

CrazyCap Team 


CrazyCap 2 -Cap Only
Shopper Approved - Verified Customer
CrazyCap 2 -Cap Only
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Michael W - 05/22/2021

Great Crazy Caps

Awesome way to use the Swell bottles we already have in the house by getting a few crazy caps.


CrazyCap 2 -Cap Only
Shopper Approved - Verified Customer
CrazyCap 2 -Cap Only
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Kathy P - 05/17/2021

Love my crazy cap, works great!

Love my crazy cap! Charge it at night, then use it in the morning. What I would really like is a crazy cap that also works like the swell sipping cap. All in one. That would be the ideal situation and one I would purchase for friends & family members! Get busy! Btw, my daughter is Dir. of Hazordous Waste, Environmental Dept. at a nearby university. She is greatly interested & impressed with Crazy Cap.

Kathy P

05/17/2021 - Texas

Good but still dont have an answer to my question.


CrazyCap 2 -Cap Only
Shopper Approved - Verified Customer
CrazyCap 2 -Cap Only
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Robert G - 05/05/2021

We loved the first one so, we ordered a second one.

Robert G

05/05/2021 - Florida

Could not get rid of the "help" box. Very annoyed


CrazyCap 2 -Cap Only
Shopper Approved - Verified Customer
CrazyCap 2 -Cap Only
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Saviana L - 03/04/2021

Thank you

Thank you Kristina

Company Response

Hi Saviana,

We are thrilled you loved your experience, Kristina is super helpful and we are sure she will be very happy to see what you wrote. 

If there is anything else we can do to help, please let us know.

CrazyCap Team. 

Saviana L

03/04/2021 - GB

Great service, as always


CrazyCap 2 -Cap Only
Shopper Approved - Verified Customer
CrazyCap 2 -Cap Only
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Stephen R - 03/04/2021

A life saver for homes with undrinkable water!

Absolutely love crazy cap 2! We have a problem with our drinking water at home and crazy cap has been a fantastic solution for us !

Company Response

Hi Stephen,

Wow! thanks for sharing such wonderful feedback with us and the community. 
Our founder will be very happy to read what you wrote.

The main idea behind the product is to have clean access to water for everyone.

If there is anything else we can do to help, please, let us know. 

CrazyCap Team. 


CrazyCap 2 -Cap Only
Shopper Approved - Verified Customer
CrazyCap 2 -Cap Only
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Pawel T - 02/23/2021

Eco star bottle

Easy to use, eco approach, no more plastic bottles

Company Response

Hi Pawel,

Thanks for sharing your eco-friendly feedback with us and the community. 
We really appreciate your support.

If there is anything else we can do to help, please let us know.

CrazyCap Team.


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