B01 Trail Running Belt

I saw an ad for the belt blow up on my insta ads and decided to look into it. I've used a few belts( spi belt, naked belt and nathans) and this has been a unit of product. I got the first initial batch in the grey color in april or may of 2026. Its been reliable, tough and downright taken on every long run effort. The zippered pocket allows a handful of gels to be stored (managed 5 CARBS 50g gels in there). The belt can hold up to two soft 500ml soft flask bottles comfortably.

The storage for poles is solid( I don't own any). The little open slit pocket is ideal for small nutrition or honestly thats where my keys go if my shorts don't have a pocket. The padlock keeps the belt from bouncing but dials in the fit quite well. I wear a small (waist size of 32 in).

Washing the belt with laundry detergent and letting it air dry is best practice.

Overall an ideal belt for whomever needs it to be. For the second generation of the belt, possibly considering adding an attachment for race bibs like the naked belt.

I bought a belt earlier this year and love it! I’ve been using it to train for the New York City marathon and it’s by far the best belt I’ve ever used. Although it may have been designed for the trail, it works incredibly well in the city. Never any issue taking gels, water, phone, wallet, shopping bags, wherever you need to pick up. Many water bottles also fit perfectly in the trekking poles spot.

All while being able to dial in the fit perfectly. Highly recommended!

as someone born female i’ve struggled to find a belt that doesn’t ride up. this belt really solves that problem! also really appreciate the dial fit for monthly changes in my body. i’ve used it with both one and two flasks and it’s comfy either way. have a few hundred miles on it and though it’s hit the ground (hard 😬) a couple times and hit brambles, seams and fabric are all perfectly fine. cannot say the same for my old naked belt. just wore it for the trailfest 50k, very happy

Wore this for the Leadville 100 this year from the start to Twin Lakes (where I switched to a vest for Hope Pass) and switched back again inbound. Zero bounce and no chafing. Ran with the supplied bottle in the back and another 500ml flask in the front on one side - stuffed gels into the other side. Paired with some multi-pocketed lined shorts it makes a great combo with plenty of capacity.

Wore the belt for the Leadville 100 miler and decided to go vestless. Wore it directly on the skin for the full 100 miles and had zero chafing. It caused zero GI issues and never once bounced. It held two bottles and a jacket for the entirety of the race. Because I had it under my shirt people kept asking me if I needed anything because they thought I had no supplies but I would always reply that I was good because I had everything I needed in the Dera belt.

I don't remember the last time a got a piece of gear that made me want to get out and get more miles, but here we are.
1.Minimal to no bounce
2.Crazy amount of storage
3.Super comfortable
4.Probably great for races(finding out soon).
You can definitely tell the people here know what they are doing and put an incredible amount of thought and love into this, and I cant wait to see what's next.

Great belt with amazing fit. Wore this for a recent 52K in Northern California with a ton of climbing requiring trekking poles. Using the dial to make slight adjustments in fit as I took out my poles or drank fluids from the included flasks really mitigated any bouncing, and I was able to get by with a minimalist approach compared to a vest on a hot day, reducing both weight and heat. The customer service was also amazing when the initial belt I ordered was a little small; the exchange was easy and the staff were efficient and very helpful.

Looking forward to more colorways (hopefully aligned with Mammoth Trailfest in September)!

I purchased the Dera belt the day it released for pre-order and my excitement was well justified! This belt is amazing! I have gone through many different belts and none have come close to the security that the Dera belt offers. It is such a joy to run with this belt knowing that there is going to be absolutely no bounce even fully loaded out. I especially love how I can adjust the tension with the dial on the side. I am in love with this belt, and will definitely be ordering another once they drop new colors!

10/10 belt. Better than anything else I’ve tried by a mile. I have Raide, ultraspire and plenty of other belts. This belt doesn’t move doesn’t bounce and just disappears. It’s also the easiest to get on and off out of all of them. I modified mine to hold the ultraspire light and it worked without an issue. I did the last 1/3 of the Tahoe 200 in this belt and was massively impressed. Customer service was on point as well. I hope to see more from Dera! I will still use my ultraspire belt when I need the extra capacity but otherwise this is my no brainer go to belt from now on

Best belt I’ve ever worn. Wore it at Snow Peaks 50 and was able to carry plenty of fluid, gels, etc. So much better than a pack especially when it gets warm out. 100 percent recommend.

I wore this belt for nearly 54 miles of my recent 100 mile ultra. It was worn during the day packed out with two bottles, phone, and plenty of nutrition. Also worn at night with a waist light on just above the belt.
Things that I love:
-The comfort of the belt on and off the skin.
-The two 600mL flasks and amount of nutrition I was able to stuff into the belt
-BOA system that is unique and super quick to loosen and tighten
Things that I do NOT like:
-There aren't more color options yet

It truly makes a vest obsolete

Such an awesome product. I have been using it consistently for the past 3 weeks and have loved every run in it. The boa fit is perfect for adjusting in the fly. I have tried multiple running belts and this is the most comfortable on the market.

0 bounce and truly does disappear when it’s on!

Hands down my go to belt. Pick it up for every run, short or long. It holds the perfect amount of liters. I can fit two flasks, even a third smaller one if I want. The back zip pocket is my fav. Love a big zip that keeps my wallet and keys safe and worry free. The stretch fabric is exactly what I’ve been looking for, so comfy! Overall a big fan and I think a lot of people are going to find this becomes a daily necessity!

This belt is dialed. No pun intended.

The fit, comfort, and overall design are next level — zero bounce, easy to forget you’re even wearing it, and everything just works while moving. The water-resistant pocket, EXTERIOR zipper pocket, and one-hand on-the-go adjustability are all killer features. But the real standout for me is the rear pass-through pouch. Way more versatile and secure than the typical elastic cord loops most brands use.

You can tell the designer actually runs and uses this thing. Every detail feels intentional. This belt checks every box and then some for me. 👌

Great product! Holds multiple flasks and gels all while maintaining a good fit due to the BOA system. Have yet to use it with poles, but that pass through pocket doubles as a nice spot to stuff a windbreaker.

I can’t say enough good things about Dera, both the belt and the company behind it. The belt itself is incredibly functional. It’s comfortable, secure, carries everything I need, and stays put even on long trail runs without bouncing or becoming annoying.

What really sets Dera apart, though, is their customer service. I reached out when I needed a replacement belt before an upcoming race, and they went above and beyond to help me out. Communication was quick, shipping was incredibly fast, and they made sure I had what I needed when I needed it.

Great product, even better customer service. It’s rare to find a company that takes care of its customers this well. Dera has definitely earned my business.

Raide who? This is the best running belt out there by a long shot. Love it

This is my first running belt & hopefully my last. It does everything it said itll do, and it does it well. Ive worn it for long runs, a half marathon, and speed work days. It has become a go-to staple for all my runs. The BOA or BOA-style synch system is awesome and reduces any bounce (if there is any). The only thing i have not tested is its performance when fullyloaded or overloaded with poles, jacket, and other misc. bits and bobs for more adventurous runs/hikes/bike rides, etc.

As someone new to long-distance running, the Dera belt has been an absolute game changer.

The pocket placement is perfect, the stash pocket in the back is genius, and THAT BOA clip system?! Being able to tighten it as I drink down my flask and keep everything secure is next-level.

Dera—I hate leaving reviews, but this one needs to go BIG.

Seriously incredible gear. 10/10!

-Kevin S.
Houston Tx

I absolutely love the B01! It is easily one of my favorite pieces of gear for running! The claim of no bounce is absolutely true and it’s astonishing how it just disappears on me! I always judge my running gear on the simple idea of if I forget about it while I’m running then it must be doing its job and the B01 belt easily ticks that box!

I have tried several running belts over the years as wearing a vest gets hot in the summer. This is the first one I've found that fits me and doesn't bounce. The boa style adjustment is perfect as you can tighten the belt as you run.

I've tried SO many belts over my 25+ years of running. There have been some good ones, but never a "great" one...until now. The B01 is perfect. Zero bounce, yet somehow comfortable. Fits everything you need, yet nothing you don't. I can take it on a short recovery run for my phone and water, and also load it down for something more adventurous. Kudos to the Dera team on knocking it out of the park.

For sizing reference, I'm a 31 inch waist and the medium fits great.

Fantastic waist belt! The Dera waist belt is a game changer—zero bounce, even when running hard. It stays comfortably in place and is perfect for carrying racing poles without getting in the way or shifting around. Lightweight, secure, and incredibly functional. If you’re looking for a reliable belt for race day or training, this one is a winner!