Frequently Asked Questions

Do you have questions? We have the answers. If you can't find the answer to your question, please contact our customer service at briefkasten@gruendl.com

Order

Unfortunately, cancellation is not possible due to technical reasons, in order to ensure a smooth process. If you wish to revoke your order, you can return it to us at your own expense after receiving the goods. If you have any questions, please contact our customer service at briefkasten@gruendl.com.

Delivery

Normally, your order will be shipped within 1-3 business days with DHL GoGreen.

Returns

Please contact our customer service by email at briefkasten@gruendl.com with your order number and photos of the damaged/incorrectly delivered goods. We will deal with your request as quickly as possible.

Payment

We offer the following payment options: PayPal, SOFORT Überweisung, credit card (MasterCard, Visa), American Express, Apple Pay, or via Klarna (invoice and installment plan).

Products

Mercerization is a finishing process for cotton. In this process, the fibers are treated with concentrated sodium hydroxide solution. This causes the fibers to swell, become stronger, and acquire a smooth surface. The result is a silky sheen and higher dye uptake.

General

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