All products offered in the store are available directly from our warehouse. Orders placed before 3 p.m. will be delivered the same day by Swiss Post (colis prioritaire) and delivered to you the following working day.

Yes, we will send you the Swiss Post tracking code by email after dispatch. As we deliver your parcel directly to the Swiss Post distribution base, the first scan will be sometime during the night. Delivery by A Mail (Colis Prioritaire) is for all orders up to 15h directly on the following working day (delivery Monday to Friday).

All orders received by 3 p.m. are guaranteed to be dispatched on the same day.

If this is not enough for you, please send us a short email BEFORE ordering and we will see if there is a solution for your special request.

Please send the item that does not fit to the following address:

Bergfritz AG
Returns
Deinikonerstrasse 12A
6340 Baar

We will immediately confirm receipt of your return via email. Any payments already made will generally be refunded the same day and confirmed via email as well.

When returning an item, please make sure you are clearly identifiable as the sender. The easiest way to do this is to include the original packing slip or a copy of your order confirmation via email.

The size doesn't fit? You want something else?

No problem!

Send us an email and tell us which size you want to exchange the item for.

Bergfritz will send you the desired size immediately. With the replacement shipment, you will also receive a prepaid return label for the previously received or incorrectly ordered product. You can then simply hand in the incorrect product at the nearest post office free of charge.

Any price difference in your favor will be refunded immediately.

You can pay by credit card, Twint or invoice.

When paying by invoice, we work together with MF-Group AG. This external company will then send you an invoice by email approx. 48 hours after ordering and after receiving your delivery. This invoice must be paid within 14 days. Otherwise, a postal invoice will be sent to you at the end of the month for a fee of CHF 2.90. If this invoice is also not paid on time, MF Group AG will charge reminder fees.

No, payment by credit card or with Twint is free of charge for you.

The same applies to invoices - as long as you pay the invoice sent by email within 14 days. Otherwise invoice and reminder fees will be charged.

Yes, the new battery packs are compatible with all Lenz products with push-button connections.

The Slim version has a slightly narrower cut, especially in the footbed. The Slim version is also slightly narrower in the lower leg area. This version is often bought by women.

The Lenz Heat Sock 5.1 is the classic among heated ski socks and, for most skiers, the simplest all-around solution.

The Lenz Heat Sock 6.1 Toe Cap Merino Compression is particularly thin, has a sporty cut, and also features a compression function. We recommend it especially for ambitious recreational athletes, such as ski tourers, as well as for tight or custom-fitted ski boots. The high merino wool content also ensures a comfortable fit and helps wick away moisture.

The Lenz Heat Sock 7.1 Toe Cap is Lenz’s thinnest heated sock and was developed specifically for very tight performance and race ski boots. It’s the right choice when you want as little extra bulk as possible in your ski boot.

If you do not use the battery for a longer period of time (e.g. summer), half charge the battery. Ideally, the manufacturer recommends discharging and half-charging the battery every 6 months if it is not used for a long time.

Bergfritz Tip:

Modern rechargeable batteries recover well through use and repeated charging during the season. Be sure to charge the battery completely overnight before and after the first day of skiing.

Lenz offers a 24-month warranty starting from the date of purchase.
You can find the detailed terms and conditions here: .

Please note:
Claims based on minor differences in the charge levels of lithium packs displayed in the Lenz heat app during charging or heating mode are excluded from the warranty. Lithium packs and heating elements are naturally subject to manufacturing tolerances. These differences have no noticeable effect on the product’s heating performance or heating duration.

To file a warranty claim, you can send the product to Bergfritz or directly to Lenz’s general distributor in Switzerland. Please use the form below:

Download Lenz Warranty Form

If you no longer have the invoice, send a brief request to our customer service at and you will receive a PDF copy.

Snowlife provides a 24-month warranty from the date of purchase.

Please note:
Claims based on minor variations in battery charge levels during charging or heating operation are excluded from the warranty. Lithium packs and heating elements are naturally subject to manufacturing tolerances. These differences have no noticeable effect on the product’s heating performance or heating duration.

To file a warranty claim, you can send the product to Bergfritz or directly to Snowlife in Klosters (Note: mail delivery only—no walk-in service center!). 

Please use the form below:

Download Snowlife Warranty Form

If you no longer have the invoice, send a brief request to our customer service at and you will receive a PDF copy.

All Bergfritz products are guaranteed for 24 months from the date of purchase.

In case of a warranty claim, please send a short email to info@bergfritz.ch and describe the problem. In particular, it is important for our support to identify whether the problem is with the product or the battery.

Bergfritz decides directly about the warranty exchange and is known for its uncomplicated and fast warranty and service center.

The battery is guaranteed for 85% performance after 24 months.

Do you have the feeling that your battery is not working at full capacity? If the battery has not been used for a long time, you may experience a temporary loss of performance. The problem can be solved by fully charging the battery overnight and then using it normally. After you have repeated this process three times, the battery should have recovered and provide the usual performance.

Not even Bergfritz knows that for sure.

But it's always nice in the mountains and in nature with the right equipment ;-)

Here you can find warm socks from Lenz and Bergfritz or gloves from Snowlife, Lenz and Bergfritz.