Samwrote a review of Castelli Cw.3.1 Gloves - Men's on November 29, 2017
Familiarity: I've put it through the wringer
I have been using these gloves for about 2 months now, for daily bike commuting in Seattle. That has involved a lot of rain (rarely a downpour, but often in steady rain for 30-45 minutes at a stretch), a fair bit of high winds/high speed downhills, and temps only getting down into the high 30s, more often in the 40s. I have been blown away by the quality of wind-proofing - nothing gets through, whether it's dry or wet. Similarly, I have yet to experience the rain penetrating. The level of insulation is spot on for my climate/usage; on sustained climbs, my hands definitely start to overheat, but I tend to run hot, so this is very much to be expected. They are very comfortable, and there's very reasonable articulation/feel for the handlebars/brakes/shifters. Finally, the build quality feels excellent so far. As I mentioned, have only used them for 2 months of twice daily usage so far, so not exactly a long-term test, but they feel extremely sturdy/well-made. All in all, for what these are - extremely windproof, extremely waterproof, with insulation appropriate for chilly but above-zero temps - I really could not ask for these to be any different or better.
Also, I think a review from 2013 mentioned a lack of snot pad - that has totally been remedied, there are large and well-textured snot pads on the back of the thumbs (they get a lot of use from me).