PEARL iZUMi  Summit AmFIB Lite Bike Pants - Men's

I had put off buying cycling specific pants for a couple years. I only really “need” them for winter fat biking so I didn’t think it would be worth it. Now that I’ve had a chance to wear them on a few rides, as well as around the house I’m glad I got them. My favorite features are: the comfortable waist closure and adjustment. Not having to wear a belt makes them work so much better with a hip pack I wear on almost all rides. The zippers at the ankle cuffs are also a nice feature, making it super easy to get the pants on and off. And like every Pearl Izumi product, the quality is second to none.

[This review was collected as part of a promotion.] Well designed and made pants, they perform quite well as a shoulder season pant, probably good down to about the freezing mark. Just the right amount of insulation, wind blockage on the front, and they breathe very well. Fit is spot on overall, althought I'd like to see a smide more room in the calf area as I have cateloupe-sized calves and this is a common challenge I have with fitness and sweat pants. But again, very good MTB pants, very comfortable, and appear they will be very durable for years to come.

My favorite fall/winter bike pants. They run a little big, but you can cinch them in with the Velcro straps on the sides. I use them in Vermont for mountain biking and fat biking in winter. I use them when temps are in the 50s, and I put on long thermal underwear when temps drop below freezing. Biking pants aren't meant to be noticed when pedaling. They should keep your legs warm at the start and let heat escape when the ride gets tough. These pants do that well.

The regular Amfib pant was not only too warm for my needs, but the sizing was atrociously off by about 4 waist sizes. These AmFIB Lites not only provide enough warmth for my winter riding (lower elevation Idaho), but my 32" pant size fits perfectly. Single snap closure because buttons are a bad idea, waist adjustments do just enough, ankle zips easy to use and don't catch on fabric, knees don't bind pedaling on my regular size legs (5'10", 165 pounds). Not baggy but enough room for PI bibs and leg warmers for my truly cold days. Depending on how hot/cold you run these would be overkill for me at 45F/7C. I would not wear these in extended downpours, but that's not what they're designed for. An excellent pant that doesn't scream "hey, look at me, I ride bicycles" but still technical enough for gravel and mtb.

I've only had the opportunity to use these pants twice so far as it's transitioning to spring and getting too warm to wear. They're comfortable, fit well, and I kind of just forgot about them after putting on, which is a good thing. Perfect for MTB riding in the 20 to 50 degree range. Any warmer and I think they'll be too hot. Can't speak to long term durability but I have the lighter version of these and they've held up just fine for 2 years and counting.

The 2019 AmFib Lite pants were fantastic, and I've used mine a lot. The current design ditches the double waist buttons that looked better in favor of a single. The old version protected leading edges against cold/moisture and vented heat out the back, but the new ones feel like all one fabric, only the leading edge kind. They pulled down on the rear when lifting my knees, so I had to return mine.

This is a quality garment that I purchased primarily for Fat Bike riding. I have one ride with them on a 25 degree day which was ideal. I'm a 33-34ish waist and I purchased the L size thinking there was more adjustability. They were close, but I think I should have gone with a medium. For me, the inseam is long, but the tapered ankles help with that.

The older Summit AmFib Lite pants are some of my absolute favorite- softshell panels breathe, the pant stretch comfortably, and block wind remarkably well. These pants don't stretch, don't breathe, and are tight enough and grippy enough that I couldn't pedal a bike without the pants pulling at my knees. Huge failure compared to the old pants.

I have an 10 + year old pair of Amfib tights which are still going; the best softshell winter biking pants I've had. These are a little lighter weight, but fit like pants so they're not out of place on a hike or around town. I'm hoping to use them a lot this winter! Pearl Izumi stuff is still great quality!

These pants are amazing. They feel great while wearing. Perfect for mountain biking from 40 degrees and below. I had the regular Summit AmFibs but those are too hot unless you’re riding below 15 degrees. They run big so go down one size. I normally wear 32 and 30 fit me perfect