HAVNHAVN combines material science and advanced performance fabrics to create clothing that blocks 99% of UV and wireless radiation and supports your wellbeing and long-term health. Discover the first protective apparel you’ll actually want to wear.
HAVN (getlambs.com) has 260 customer reviews on Five Star Index, with an average rating of 3.7 out of 5.
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Showing 157 reviews with 5 stars · Clear filters
Kenneth K.
I think that I found a new favorite line of unique products. I'll check some other things out in the coming months.
Response from HAVNOct 13, 2026
Welcome in, Kenneth :) The beanies and the lap blankets are usually where people go next after a hat.
Jess
I'm not sure they actually work - don't they have to be grounded to achieve the desired effect?
Response from HAVNOct 13, 2026
Fair question. Grounding matters for low frequency electric fields. Our fabric is built for the wireless side of things, phone, Wi-Fi, Bluetooth, and that type of signal gets reflected and absorbed by the silver fiber, so no ground connection is needed. Easiest way to see it: put an EMF meter next to your phone, then cover the meter with the hat and watch the reading drop.
Alan
Shipping was fast. Beanie is lightweight and comfortable to wear all night. I have been sleeping well.
Response from HAVNOct 13, 2026
Fast shipping and better sleep is the combination we aim for. Thanks Alan.
Wayne K.
I didn't really know why my sleep had become so difficult. I tried numerous supplements with little effect. I bought your beanie as part of a continuing effort to stay healthy and was amazed how much it helped my sleeping issue. I must have more exposure to EMF pollution than I thought.
Response from HAVNOct 13, 2026
Supplements can't do much about what's coming at you through the air, which may be why the beanie moved the needle where they didn't. Glad you found it, Wayne.
Melanie B.
Just came back for winter hats. Thanks
Response from HAVNOct 13, 2026
Good to have you back, Melanie. Enjoy the winter hats.
Giovany C.
The beanies and the hats are comfortable. The material is good and the beanies are warm as well as lightweight.
Response from HAVNOct 13, 2026
Warm without the bulk took a lot of iterations to get right, so that's good to hear. Thanks Giovany.
Robert S.
Nice looking beanie, lightweight and comfortable!
Response from HAVNOct 13, 2026
Looks good, feels like nothing. That was the whole brief!
Doug
Started wearing the cap around the house while working from home. I usually spend about 6 to 8 hours in front of a laptop, or on the phone with my Bluetooth headphones in. I noticed a significant difference toward the late afternoon…no headache, no feeling of brainfog. Exactly what I was hoping for!! Love the look of the baseball cap too. Highly recommend to anyone around a lot of wireless tech!
Response from HAVNOct 13, 2026
That's exactly the case we built the cap for: long screen days with a Bluetooth headset running the whole time. Glad the late afternoon feels different now. Appreciate the recommendation, Doug.