Mir hat mein Osteopath einen Nierenwärmer mit Kupfer empfohlen, da mein Cortisol Spiegel zu hoch ist. Seit dem schlafe ich besser, wenn ich den Nietengurt trage. Vielen lieben Dank für das super Produkt.
Copper kidney warmer
€95,00
The copper kidney warmer made from odor-resistant, breathable merino wool is approximately 25 cm wide, keeping the middle of the body—including the kidneys, hips, abdomen, and lower back—pleasantly warm. The body’s own heat is retained by the natural thermal insulation of the merino wool with copper against the body. This can not only relieve pain, but also feels exceptionally beneficial during the cold season. Keeping this area of the body comfortably warm with the copper kidney warmer has a positive effect on the entire body!
- Size L stretches up to a hip circumference of 90 cm
- Size XL stretches up to a hip circumference of 110 cm
- Size XXL stretches up to a hip circumference of 130 cm
The copper kidney warmer has no support function and is equally suitable for women and men.
A unique quality product from Bolter Socks in collaboration with the KOBRI atelier
Delivery usually in 1–2 working days
Austria ·
Delivery details
Hurry, only 2 items left in stock!
Pairs well with
Ships immediately from stock – free delivery for orders over €49 in Austria and Germany – free delivery for orders over €70 in Switzerland and the EU
Handmade in Austria
OEKO-TEX Certified
Easy returns
90% merino wool, 10% copper
Washing instructions:
- Hand wash
Copper kidney warmer
Weiß / XXL
€95,00
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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Contact Us
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This is Bolter Socks
Handcrafted in Vorarlberg, Austria, by a family business
"We uphold values that feel good deep down. And you can feel that every time you pull on our socks." Alexander Bolter
Handcrafted & Quality
Why our merino and copper socks are so good for your well-being
Our merino wool socks absorb up to 30% of their own weight in moisture and, thanks to their fine fibers, are much more comfortable to wear than sheep's wool socks.
Combined with the ventilation channels typical of knitted fabrics, reinforced toe and heel areas, and a fluffy merino pile sole, they regulate the climate, keeping your feet dry for longer and at a comfortable temperature.
For even more comfort, we also offer socks without elastic. Socks with copper threads improve circulation and are therefore very popular with athletes and people with cold feet or circulatory problems.
Bolter merino socks are suitable for both women and men. The only differences are the color, material, and size.
Frequently asked questions
Find more answers to frequently asked questions on the FAQs page.
What makes Bolter Socks so special?
At Bolter Socks in Koblach, Vorarlberg, Austria, wool socks of unique quality and durability are crafted with extensive handwork and traditional knitting machines from high-quality merino wool and pure copper threads—qualities rarely found elsewhere today.
Are Bolter Socks also available without elastic bands?
Yes! Our “no elastic” models are made without restrictive bands and are ideal for sensitive skin, circulatory problems, or simply for greater comfort.
How do I properly care for my Bolter Socks?
To ensure your socks last a long time, we recommend:
- Machine wash at a maximum of 30–40 °C
- Do not tumble dry
- Merino products are best dried flat
- Please do not use fabric softener – it can damage the fibers
Are there offers for businesses or larger orders?
Yes, we offer volume discounts and custom logo solutions for companies, clubs, or events. Contact us—we’ll be happy to advise you!
How quickly is shipping carried out?
We dispatch orders received by 12 p.m. on business days (Mon–Fri, excluding public holidays) the same day; orders received after 12 p.m. are dispatched on the next business day.