The product is fine but
"The product is fine, but it runs really small, so you'll need to go up a size to be able to zip it."
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CASTELLI ESTREMO overshoes are specially designed for the coldest days, when most cyclists opt for the home trainer. This model represents the ultimate in warmth and protection thanks to its fleece-lined Gore-Tex Infinium™ Windstopper® outer layer, combined with a full Polartec® Power Stretch® inner lining. This construction ensures exceptional thermal insulation while allowing excellent breathability.
The CASTELLI ESTREMO is the brand's warmest overshoe, ideal for extreme conditions. Gore-Tex Infinium™ Windstopper® fabric effectively protects against wind and water, while offering optimal ventilation. The Polartec® Power Stretch® Pro™ lining keeps your feet warm, while reflective details enhance visibility. The YKK® AquaGuard® zipper and durable underfoot material guarantee long-lasting protection and durability.

Ref: 9709880410461
Overall rating: 4.0 / 5 from 2 reviews.
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"The product is fine, but it runs really small, so you'll need to go up a size to be able to zip it."
"We've had several outings in temperatures of around 0°C . This overshoe protects from the cold, but nothing more. I wear size 43 shoes, so I went up 2 sizes. It's still tricky to put on.