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«Mixed reviews: many users appreciate the warmth and comfort, while others report quality issues and construction flaws. Improvements are needed.»
(Automatically generated summary of reviews)

for another variant: white, 40/41
Ideal in winter to keep your shoes warm

for another variant: white, 40/41
Very good thermosols

for another variant: white, 40/41
Bought for the umpteenth time

for another variant: white, 38/39
Good but expensive. There used to be a cheaper version with an aluminum coating, but I couldn't find it in our Migros.

for another variant: white, 38/39
Absolute favorite soles because they don't slip.
Catastrophic faulty design and product defect!!! Should be recalled urgently. Sole disintegrates and aluminum midsole crumbles and leaves a huge mess in the shoe!!!!
did not find the correct shoe size 38/39 and therefore bought 36/37, which is not right for me. my partner's 42 was not available either. Too bad. There were dozens of soles in sizes that are not common. I have only now worn the size 36/37 soles I bought for a few days and find them ok. Only the size is just not right. Purchasing should be based more on the usual sizes 38/39 and 42.

for another variant: white, 44/45
Not really warming

for another variant: white, 38/39
The best for winter
Comfortable in the shoe, easy to wear, keep you warm. I've been wearing them for several weeks, they don't slip and are still in perfect condition.