BERT Knit vs BERT Neoprene
Which Pre and Post Activity Shoe Is Right for You?
If you've landed on this page, you probably already know what BERT is, the pre and post activity shoe. The shoe you put on before you clip into your cycling shoes, and the one that's waiting for you at the trailhead when you take your hiking boots off.
What you might not know is that we now make two versions of it. And while they share the same DNA, the same sole, and the same purpose, they are built for different conditions. This guide will help you figure out which one belongs in your pack.
First: What Do They Have in Common?
Before we get into the differences, let's start with what makes both shoes unmistakably BERT.
Both the Knit and the Neoprene are built around the same idea: the transition moments that surround outdoor activity are just as important as the activity itself. Nobody designed a shoe for those moments, until BERT.
Both shoes share:
- The same recycled rubber outsole, sourced from ASOHECA, a cooperative of 1,200 Colombian families rebuilding their lives through ethical rubber production.
- The same EVA insole that absorbs impact and distributes pressure evenly across the foot.
- The same almost zero-drop sole (2mm drop) for a natural ground feel.
- The same slip-on design with no laces and a wide toe box.
- The same packable silhouette, both fit in a jersey pocket, a stuff sack, or the corner of a handlebar bag.
- The same BERT dog logo and lime green heel tab.
If you've read The Radavist's review of the BERT Neoprene, you already know what the experience of wearing a BERT feels like. Reviewer Daniel Diaz described them as something he could slip on after work boots, use around camp, and pack flat inside his handlebar bag, "about the same space as a package of flour tortillas."
That experience is the same with both shoes. What changes is the upper, and that changes everything depending on the season.
The Main Difference: The Upper Material
BERT Neoprene: Built for Cold, Wet, and Unpredictable
The original BERT is made with a neoprene upper. If that word sounds familiar, it's because neoprene is the same material used in wetsuits. That tells you a lot about what it does well.
Neoprene naturally insulates your foot. It keeps warmth in, which makes it an excellent choice for cold weather, early mornings, and wet conditions. It also dries faster than knit fabric, which makes it practical for variable weather where you might get caught in rain or cross a stream.
The tradeoff is breathability. Because neoprene insulates, it does not allow airflow. In warm temperatures, your feet will heat up. Daniel Diaz noted in his Radavist review that his feet got sweaty when wearing the shoe sockless, an honest and accurate observation that comes directly from the material. This is not a design flaw. It is simply what neoprene does. It is a warm-weather material designed to keep you warm, not cool.
The BERT Neoprene is your shoe for:
- Autumn, fall, and winter adventures.
- Camping in cold temperatures.
- Bikepacking trips where mornings are cold and conditions are unpredictable.
- Rainy days and wet terrain where fast drying matters.
- Anyone who runs cold.
- Any water sports
BERT Knit: Built for Warm Weather, Travel, and Breathability
The BERT Knit was born directly from customer feedback on the Neoprene. People loved the shoe but wanted something they could wear in summer without their feet overheating. They wanted something more breathable, more lightweight, and to be honest, something that looked a little more like a shoe and less like a water shoe.
The result is the BERT Knit: a 100% knitted upper that wraps your foot like a second skin. Because knit fabric is by nature porous and breathable, air flows freely around your foot. There is no insulation. There is no heat buildup. Even in warm temperatures, your feet stay comfortable.
The Knit is also slightly lighter than the Neoprene, about 5 grams per size, and because the upper is so flexible, it compresses even more easily when packed.
One important thing to know about the Knit before you order: because the upper fits like a sock, it runs slightly smaller than the Neoprene. If you wear a 9.5 in the Neoprene, you will likely want a 9 in the Knit. When in doubt, size down.
The BERT Knit is your shoe for:
- Spring and summer adventures
- Warm climates and hot destinations
- Travel: it packs into nothing and breathes on long flights
- Bikepackers and hikers who run warm year-round
- Anyone who found the Neoprene too warm
Side-by-Side Comparison
Who Should Buy the Neoprene?
You are a year-round bikepacker who rides in cold mornings and needs a camp shoe that handles whatever the weather throws at you. You are a backpacker who crosses streams and needs a shoe that dries fast. You are someone who runs cold and wants the warmth of neoprene even in mild temperatures. You live somewhere with cold winters and want a shoe that genuinely keeps your feet warm between activities.
The Neoprene is also the shoe with the longer track record. It has been reviewed by The Radavist, Bikepacking.com, and Bike Rumor. It has been carried across mountains, packed into handlebar bags, used as a camp shoe in Patagonia, and worn at coffee shops after century rides. It is a proven shoe with a community behind it.
Who Should Buy the Knit?
You are a spring and summer adventurer who needs something that breathes. You are a frequent traveler who lives out of a carry-on and refuses to let a shoe take up real estate unless it earns it. You are a cyclist, hiker, or runner who finishes activities in warm weather and wants the relief of a shoe that feels like nothing. You are someone who tried the Neoprene, loved it, but found it too warm in summer.
The Knit is also the shoe for people who care about how they look off the trail. The knitted upper is a more contemporary silhouette, it reads as a shoe, not a water shoe and it works as well in a café or airport as it does at a trailhead.
Our Honest Take: Can You Own Both?
Yes....and many of our customers do.
Think of it the way you think about a running jacket. You own a lightweight shell for summer and a heavier insulated layer for winter. Both serve the same function. Both live in your kit. You just reach for the right one depending on the day.
The BERT Neoprene for your autumn bikepacking trips. The BERT Knit for your summer hiking weekends. The same outsole, the same mission, the same shoe for everything around the activity, just calibrated for the season.
Still Not Sure?
Here is the simplest version:
Cold weather? Wet conditions? → BERT Neoprene
Warm weather? Travel? Hot climates? → BERT Knit
If you have any questions at all, about sizing, about which shoe fits your specific trip reach out directly at juliana@thebertshoe.com. We are a small brand and we answer every email.
