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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Claim this listingClothing & Underwear · San Luis Obispo, California
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Clothing & Underwear · Laguna Beach, California
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Clothing & Underwear · Torrance, California
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260 approved reviews, newest moderated first
Charles C.
Your products not worth the plastic bag it came in. Total insult and I requested information on how to return this hat last week looks like your staff is sitting on their hands, not giving me an answer they just say it’s under the review. What does that mean? Are you the kings?
Response from HAVNOct 14, 2026
Email [email protected] with "Trustpilot return" in the subject line and we'll process the return and refund directly rather than putting you back in the queue.
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.
Jill S.
I have no opinion to offer. It came on time and I've only used it once
Response from HAVNOct 13, 2026
Fair enough, one wear isn't much to go on. Give it a couple of weeks of normal use and see what you notice. If the answer is nothing, we want to hear that too.
Mark S.
Its hard to keep it looking nice once you wash it it looks old. and wrinkly. Gets to be a sloppy looking cap. I guess its working don't really feel a difference.
Response from HAVNOct 13, 2026
Useful feedback, thank you. Cold wash and reshape while damp, never the dryer, keeps the shape much longer, but a cap going sloppy after a few washes is still ours to fix and we're passing it to the product team. On whether it's doing anything, the easiest proof is an EMF meter: take a reading next to your router, then put the cap over the meter and look again.
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.