The shirts are excellent. So more issues with sweat. The fit is perfect. I didn't feel it as another layer inside, the feel while wearing the shirt is very good.
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See what reviewers are saying
Awful service from this company which is a shame because I’ve used them before and love the product! , they never delivered my item and after many emails agreed to send items again after taking my £15... See more
Company replied
I love it! Thanks to these shirts, my cashmere stays clean and I can wear my favorite sweaters more frequently. Fast delivery, too. Highly recommended for anyone looking to protect their wool and cash... See more
Company replied
AMAZING The confidence these shirts give me is great. Can safely wear delicate and unwashable fabrics or blazers now without worry that they will get stained or smelly. Thin, high quality... See more
Company replied
Company details
Written by the company
100% Bescherming tegen gênante momenten en gele zweetplekken! Ontdek onze T-shirts met speciaal ingenaaide okselpads tegen zweetplekken. Meer zelfvertrouwen? Kies voor Fibershirts!
Contact info
Sterkenburg 26, 3401HS, IJsselstein, Netherlands
- contact@fibershirts.nl
- fibershirts.nl
4.5
Excellent
524 reviews
Replied to 85% of negative reviews
Typically replies within 1 week
How this company uses Trustpilot
See how their reviews and ratings are sourced, scored, and moderated.
The shirts are excellent
The shirts are excellent. So more issues with sweat. The fit is perfect.
I didn't feel it as another layer inside, the feel while wearing the shirt is very good.
March 2, 2026
Unprompted review
Reply from Fibershirts
Hi Aswin,
Thank you for the great feedback! We're glad to hear the fit is perfect and that the shirt feels comfortable without feeling like an extra layer. It's also great to know it helps with sweat, that's exactly what we designed it for.
Enjoy wearing it! 😊
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Awful service from this company which…
Awful service from this company which is a shame because I’ve used them before and love the product! , they never delivered my item and after many emails agreed to send items again after taking my £150! , 2 months later still no items with no working order number to track! , not returning emails! … extremely disappointed and feel scammed!
January 3, 2026
Unprompted review
Reply from Fibershirts
Hi Reiss,
We are truly sorry to hear about your experience. This is absolutely not the kind of service we want to provide, especially to a returning customer.
I have personally checked your case and can see that the contact started in January. One of our colleagues responded quickly and placed a new replacement order for you. According to our system and the tracking information, this order was delivered on 2 February.
We have emailed you now again, with the tracking details and we will investigate this immediately and resolve the issue as soon as possible.
This is not a common situation and we take matters like this very seriously.
Kind regards,
Hinke
I love it
I love it! Thanks to these shirts, my cashmere stays clean and I can wear my favorite sweaters more frequently. Fast delivery, too. Highly recommended for anyone looking to protect their wool and cashmere pieces from over-washing.
February 5, 2026
Unprompted review
Reply from Fibershirts
Hi Teuta,
Thank you so much for your wonderful review! 😊
We’re really happy to hear that the shirts help keep your cashmere clean and let you wear your favorite sweaters more often — that’s exactly what they’re made for. Great to hear the delivery was fast as well!
Thanks again for the recommendation, and enjoy your sweaters!
They fulfill they purpose!
July 21, 2025
Unprompted review
Reply from Fibershirts
Hi Junior,
Great to hear that our products do exactly what they're meant to! Thanks for your feedback – short and to the point! 💪
Kind regards,
Hinke
Fibershirts
Worth the money, it works perfectly
I was hesitant to order at first place, I suffer from hyperhidrosis and tried a lot of medications but nothing worked. I must say I’m astonished how the T-shirt works perfectly. No odour and effective absorbent for the sweat. Plus one day fast delivery and their competitive prices I can’t say anything about the product. I will order again definitely.
June 26, 2025
Unprompted review
Reply from Fibershirts
Hi Jyaz,
Thank you so much for your wonderful review! We’re thrilled to hear that the T-shirt works so well for your hyperhidrosis and that you’re happy with the fast delivery and prices. Your satisfaction means a lot to us.
We look forward to serving you again soon!
Best regards,
Hinke
Fibershirts
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Great
Great. I have been using the shirts for almost 2 years now. Still works :)
June 25, 2025
Unprompted review
Reply from Fibershirts
Hi Kiwi,
Wat geweldig om te horen dat je al zo lang plezier hebt van de shirts! Dank je wel voor je trouwe support en fijne review — daar doen we het voor! 😊
Mvg,
Hinke
Fibershirts
I bought several sets
I bought several sets, because they really do work for multiple days in a row even. Even in very busy spaces, like a conference or on a very long day out. The black ones show very little of the special armpit design. Recommended (normally don't recommend anything, but there you go).
May 17, 2025
Unprompted review
Reply from Fibershirts
Hi Torec,
Thank you so much for your thoughtful review! We’re really happy to hear that the shirts are working so well for you — even on those long, busy days. It means a lot to us that you took the time to recommend them, especially since that’s not something you normally do. Great to hear you're enjoying the discreet design of the black ones too! 🙌
Thanks again for your support!
Kind regards,
Hinke
Fibershirts
Great service quality product …
Service from start to finish was excellent and the products are excellent and do exactly what they say under the product description. Recommend
June 19, 2025
Unprompted review
Reply from Fibershirts
Hi Trevor,
Thank you so much for your kind words!
We’re thrilled to hear that both our service and products met your expectations. It's always great to know when everything works as promised. Thanks again for recommending us — we truly appreciate it!
Best regards,
Hinke
Fibershirts
Reply from Fibershirts
Hi Fred,
Thank you so much for your kind words and 5-star review!
We're thrilled to hear that the product exceeded your expectations and works perfectly. 😊
If you ever have any questions or need assistance in the future, we’re always here to help.
Best regards,
Hinke
Fibershirts
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Great quality and very comfortable.
Great quality and very comfortable.
Exceeded my expectations.
Delivery time was good too.
Will definitely use again.
May 16, 2025
Unprompted review
Reply from Fibershirts
Hi Michael,
Thank you so much for your wonderful review! We're thrilled to hear that our product exceeded your expectations and that you found it comfortable. It's great to know the delivery time was good as well. We look forward to serving you again!
Warm regards,
Hinke
Fibershirts
Reply from Fibershirts
Hi Your Name,
Thank you so much for your kind words! We're thrilled to hear that the fit is perfect and that you're finding it very comfortable. If you need anything else, feel free to reach out. Enjoy wearing it!
Kind regards,
Hinke
Fibershirts
I can recommend it
I can recommend it, good quality and the fabric is a little transparent, invisible under clothes.
April 5, 2025
Unprompted review
Reply from Fibershirts
Hi there!
Thank you for your kind review! We’re so happy to hear that you’re satisfied with the quality of our fibershirts. It’s great to know that the fabric works well under clothes, even with its slight transparency. We truly appreciate your feedback and hope you continue to enjoy your shirt!
Best,
Hinke
Fibershirts
I give five stars because this product…
I give five stars because this product works very well. Normally I sweat all the time even in my sleep so I tried out this product on a very poor quality thin light colour tight Tshirt. I wore the Tshirt at work and during presentations or moments that create a nervous feeling to test the results. Honestly I can’t be happier! I can wear anything even during stressful moments and this won’t show through my clothes. In the beginning one has to get used to some extra fabric around the chest but generally they are comfortable. Thanks a lot to the inventor and ❤️
February 17, 2025
Unprompted review
Reply from Fibershirts
Hi Victoria,
Thank you so much for the amazing five-star review! We're thrilled to hear that the product has made such a positive impact for you, even during stressful moments like presentations. It's fantastic to know you can now wear anything without worrying about sweat showing through.
We also appreciate your feedback on the extra fabric around the chest – it’s great to know that overall, you find the shirts comfortable.
Thanks for your kind words and for sharing your experience with us! We’ll make sure to pass along your thanks to the inventor! ❤️
Hinke
Fibershirts
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Shirts work really well.
Shirts work really well. They are smooth and comfortable and prevent wet spots and odour.
February 5, 2025
Unprompted review
Reply from Fibershirts
Hi Klant 3,
Thank you so much for your positive review! We're thrilled to hear that the shirts work well for you, keeping you comfortable and free from wet spots and odor. It’s great to know you're enjoying the smooth feel and overall performance.
We appreciate your feedback and hope you continue to enjoy the shirts!
Kind regards,
Hinke
Fibershirts
AMAZING
AMAZING
The confidence these shirts give me is great.
Can safely wear delicate and unwashable fabrics or blazers now without worry that they will get stained or smelly.
Thin, high quality fabric.
Ordered 2 more after trying the first one.
The skin tone color is quite ugly though truly invisible under light clothing.
Would definitely recommend
February 14, 2025
Unprompted review
Reply from Fibershirts
Hi there!
Thank you so much for your amazing review!
We're so happy to hear that the shirts give you the confidence to wear delicate fabrics and blazers without worry. It's fantastic that you found the fabric to be thin and high-quality, and that you’ve already ordered more!
We understand that the skin tone color may not be your favorite, but we’re glad to know it works well under light clothing. Your recommendation means a lot to us!
Thanks again, and we hope you continue to enjoy your shirts!
Kind regards,
Hinke Fibershirts
Great product- fair prices
Great product- fair prices - good service. I will be back 😉
July 11, 2024
Unprompted review
Reply from Fibershirts
Hi there,
Thank you very much for your positive review! We're delighted to hear that you're satisfied with our product, prices, and service. We look forward to serving you again in the future.
Best regards,
Hinke
Fibershirts
Good quality
The size I bought was correct with their size guide, the shirt was thin enough to go unnoticed under a tight top, the best thing is the confidence it gives I wish I’d known about this sooner!
June 14, 2024
Unprompted review
Reply from Fibershirts
Hej Jessica,
Thank you for your review! We're glad to hear that the size guide was accurate and that the shirt fits well under your top. It's great to know it has boosted your confidence.
If you have any other questions or need assistance, please feel free to contact us.
Best regards,
Suzanne
Fibershirts
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Happy with shirts
Good quality shirts that block sweat stains. Great customer communication/service. Delivers on time. However, they are not always in stock when you need them and can take a couple of months to come back.
June 8, 2024
Unprompted review
Reply from Fibershirts
Hi Sezi,
Thank you for your positive feedback on our shirts and our customer service!
We apologize for any inconvenience caused by occasional stock shortages. We're working hard to improve our inventory management to ensure our products are available when you need them. We appreciate your patience and understanding. If you have any other questions or need further assistance, please feel free to reach out!
Thanks again! 😊
Hinke
Fibershirts
Excellent quality undershirts
Very happy with my purchase. Good quality and perfect for my needs.
May 17, 2024
Unprompted review
Reply from Fibershirts
Hi Stephen,
So glad to hear you're happy with your purchase. It's great to know it's exactly what you needed. Thanks a lot for taking the time to share your experience.
Feel free to reach out if you need anything else in the future.
Kind regards,
Hinke
Fibershirts
Life changing
May 3, 2024
Unprompted review
Reply from Fibershirts
Hi Anon,
Thank you for the positive review! We are happy the shirts are a life changer!
If you need anything else, please let us know.
Best,
Hinke
Fibershirts
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