Birkenstock Unisex Madrid, Sparkling Light Silver, 41 EU, Narrow

I was genuinely excited to try this merino product. When it arrived, I was impressed by how soft and lightweight it felt. However, I was shocked by what happened after the first wash. Despite following the care instructions and using the delicate cycle, the fabric was completely destroyed - please see the photos. One of the sleeves ripped apart entirely. I've never experienced anything like this with any of my other gear, including other merino and technical clothing. I'm extremely disappointed with the quality and durability of this item and, unfortunately, I cannot recommend it. I expect the support team might suggest I did something wrong or that this result is unusual—but I've washed plenty of similar items before, and nothing like this has ever happened.