Chris C.wrote a review of Fi'zi:k X5 Artica Cycling Shoe - Men's on January 3, 2020
Familiarity: I've used it once or twice and have initial impressions
Day 1 - 52 miles, 3 hours, road ride, endurance pace, 32° f with dry roads - Comfortable, dry and warm. Not a race-stiff sole, but I wasn't expecting it to be. I had zero issues with my feet.
Day 2 - Fat bike endurance ride, 1:30, 12 miles, 1300ft of climbing, 32°f with freezing rain on roads and mtb trails- warm and dry! However, freezing rain isn't as wet at rain.
Day 3 - 38 miles, 2-1/4 hours, 2,700ft of vert, tempo and endurance road ride with HEAVY road spray, endurance pace, 30° f with wet roads - I needed fenders! This would have fixed the fact that the cuff of the boot eventually succumbed to water infiltration. I ended up with damp to wet, but WARM feet.
Since the upper cuff will not keep out heavy water spray, it will not be greater than a 4-star rating. However, great value for now. Need to log more rides to know for use. In the meantime, I am pleased with my purchase.
I look forward to trying these boots when it is colder, in 20°s.
I wear a 44.5 Sidi. The 45 was too big, and went with a 44.