Additional nutrition can be stored in the dump pockets right below the soft-flask holsters on the chest, and I appreciated that a velcro tab keeps everything secure. I’ve got the 12L VaporKrar and absolutely love the pack. I did have some issues with sore spots, more like early bruising rather than rubbing, around my lower ribs, where the soft flasks terminate when fully inserted. In 2015, I had the S/M VaporAiress- loved it!!!!!! Hi Dan- I just received the new Momentum vest from Ultraspire and I’ll be testing it over the next month or so. When used with a spineless soft flask, I never had any issues. Of the two, the Krar wins. I have a difficult time lining both sides up adequately while I am on the go. At first I was concerned that the two included Exoshot 12-ounce soft flasks wouldn’t provide enough hydration, but I loved the ease of drinking on the run through the extended straw tubes. I’ll be checking out the Nathan packs just because they seem very nice. With less material, the VaporAiress 2.0 also weighs less. The only disappointment I have with this pack is that the side straps do make it very difficult to access the side compartments, but frankly I didn’t miss them in this race-oriented pack. No problems with fading, stitching, fraying, etc. I totally love the 4L pack, It’s been my go to now for anything over the 2 hour range. Hi Mike- Thanks for the kind words. A pocket on the Nathan VaporKrar WaistPak with a velcro closure. $149.94 - $159.99. My beef: I have a hell of a time putting the lids back on. Velcro patches coming off, side tightening strap ripped off, and sticking popped down the side of the front zippered pocket meaning anything in can slip out. IDEAL - Perfect for Marathons, Trail Running, Hiking, Cycling, Climbing, Outdoor enthusiasts, and Hydration-on-the-go! While I tested the four-liter version, a 12-liter vest is also available, the Nathan VaporKrar 12L Race Vest. I have found both to be made in a durable manner. I’ve had an Alpha for a number of years – which I’ve loved – but it’s showing its age (bungee cord splitting, back mesh tearing), so I’m thinking about getting a new one. Very interested to see what Nathan comes out with next. On the WaistPak the lower side of the pocket always seem to fold over/under each other, or shift laterally apart. I think it is pretty darn durable. I an interested in the krar 4l capacity. Do you have any thoughts on the VaporKrar WaistPak versus the Naked Running Band? The Raidlight vest is bombproof but a bit heavier than this vest. At some point in the near future I’ll need to find someone to replace the side straps, and the the chest straps will probably need doing shortly after. And how about the fit and ride of either this vest or waist pack. See above. Nathan Women’s Hydration Pack/Running Vest - VaporAiress 7L Capacity with 2.0 L Water Bladder Included, Hydration Backpack - Running, Marathon, Hiking, Outdoors, Cycling and More 4.6 out of 5 stars 72. If your flasks have grey tops, then you have the original version. With the unfortunate combination of narrow hips and some dadbod paunch if I’m not careful, waist packs have never been my friend. It's in the top 3 bestselling hydration packs and has a couple of popular alternatives in the same price range, such as Nathan Vapor Airess or Nathan VaporKrar WaistPak . Comparably, the Salomon S-Lab Sense Ultra 5 Set weighs in at around 4 ounces, but it bounces a bit more and feels less durable than the VaporKrar. I’m on to them now. In fact, I find that all of their sizing has shrunk over the past 2 years. Nathan makes a women's version of this hydration vest, the VaporAiress 2.0. It takes a couple of goes each time to get it right. That has all changed now, though, and the Nathan VaporKrar 4L Race Vest ($150) is my pick for pack of the year. I found this was due to construction of the flasks rather than the vests, and it was important for me to make sure that the plastic spine of the Nathan soft flask pointed out rather than riding against my chest. Thanks for the review. What are your overall impressions of the products you are using? The two zippered shoulder pockets were large enough to hold my iPhone 6 and five gels at a time. All Trademarks and Copyrights belong to their respective owners. I think I’m a few years late here but thought I would add a few comments in case anyone Is looking for info on these products. Front closure system (buckles), hydration pocket width/depth accessibility, fit and durability all nod to the Krar. with a brand that produces packs, please share that relation in each of your comments on this article. Adam- Nathan updated the flasks as I noted in my review. Enter the VaporKrar Waistpak with its soft, stretchy, one-piece construction complimented by fully adjustable side straps that can be dialed in for a no-bounce experience. I definitely wouldn’t use the flasks if I was worried about time. A zippered pocket on the Nathan VaporKrar WaistPak. does anybody have experience with the latest UltraSpire vests? Of course, they can also be worn in combo to provide a ton of storage options for longer days on the trail. I couldn’t take a full breath because it constricted my rib cage. While packs such as the VaporAir and Fireball were certainly durable and well made, they just seemed clunky and heavy next to the body-hugging state-of-the-art packs made by other brands over the last few years. It's in the top 3 bestselling hydration packs and has a couple of popular alternatives in the same price range, such as Nathan Vapor Airess.. Nathan VaporAiress Race Vest is $31.25 more expensive than an average hydration pack ($26.99). Not sure how the fabric holds up to rain. I also like having a dedicated phone pocket and the stretchier material of the Nathan to stuff gear in. Disclosure: I own an outdoor specialty store and we are Nathan dealers. Tom’s passion for trail running and specialty running retail experience shine through in all of his highly technical reviews, which do range outside minimalist shoes. I tried the 12L Vaporhowe but it was made very small. The shorts are from Outdoor Research (Amplitude Short), and I’ve grown to like them despite them being longer than what I typically wear. View all posts by Tom Caughlan. Luckily, Nathan’s sizing recommendations are pretty spot on, and the size medium worked well with my 38-inch chest. Nathan is on the cutting edge of hydration systems currently, and after looking at their fall catalog, I don’t think they’ll be slowing down anytime soon. If you’ve been searching for the perfect vest or waist pack, I would highly recommend checking these VaporKrar products out. Both great vests. You bring up excellent points about the durability. Details can be found here. However, my biggest gripe with the VaporKrar products has nothing to do with the vest or the belt, but rather the construction of the soft flasks that originally shipped with the packs. I have friends that say the same about the Salomon 8L. Where Nathan diverges is through the use of a more rigid piping where the sternum straps attach. While I tested the four-liter version, a 12-liter vest is also available, the Nathan VaporKrar 12L Race Vest. Each attempt a bit more fluid (and time) is lost and, if it’s anything other than water, I get sticky hands. Thanks Tom. While I don’t usually like side straps for fear that they will dig into my ribcage, the adjustable-on-the-fly side straps on the VaporKrar 4L Race Vest stay put and are very easily loosened or tightened as needed, depending on the load you’re carrying. The Nathan VaporKrar 4L Race Vest. Anyone had experiences with both of those packs? I lean towards the Krar, but the Salomon 8L has more storage and I love the side pockets on the vest. This Nathan pack looks really nice but I worry about durability. Also in Nathan’s latest generation of packs are those in the VaporHowe line (with design input from Stephanie Howe Violett) and the soon-to-be released VaporZach line (of Zach Miller fame). While having straws on bottles is nothing new, I really liked the ease of drinking out of straws on the Exoshot 12-ounce soft flasks. I’ll second the author’s complaint about the OG flasks/straws, and add that if your a skinny/tall dude the straws may be a liiiitle shorter than you’d like (some awkward neck craning to drink on the run). This tactic also seemed to be a well-balanced load and I experienced absolutely zero bouncing. A big thank you to Rob Krar, who I ran into while pacing Run Rabbit Run 100 Mile, for investing his time to make sure that Nathan sent me the updated flasks. However, while other companies, namely Salomon and Ultimate Direction, made huge developments every year in pack design, materials, and fit, Nathan’s packs seemed to stagnate. Nathan VaporAiress Race Vest is $21 more expensive than an average hydration pack ($26.99). Also, what running shorts were you wearing? In the past, I was never really impressed their packs, and I have owned plenty. Notify me of followup comments via e-mail. Would everything get super saturated?? It’s incredibly light, and you really do forget about it once you start running. If it didn’t have the adjustment straps on either side and/or there was more strap for chest adjustment, I could have made it work. But I have some good news, Nathan has recently updated the caps on the Exoshot flasks to have a bit more threading. I love both vests. Try both if you can. A side view of the VaporKrar VaporKrar 4L Race Vest. Nathan Vaporhowe Hydration Pack, Running Vest with 1.8L Hydration Bladder Reservoir, Women's 4.7 out of 5 stars 231. Somewhat related question . Have you been running in any of the packs in the Nathan VaporKrar line? Nathan redesigned the lids and threading on these flasks. I’m totally sold on the WaistPak as well – I’ve run up to 44km with it carrying phone, keys, gels, soft flask and a light jacket with minimal bounce. My very first ultramarathon was completed wearing the original HPL #020 Hydration Vest, which is still very popular. This feature is oddly reminiscent of the Salomon Advanced Skin packs from several years ago, and it works great. Nathan VaporAiress Race Vest is a popular and one of the more expensive options. My only issue with it has been with the threading on the mouth of the supplied soft flask. A bonus for me is that it’s versatile enough to carry full manadatory gear for fell races as well: waterproof jacket in the back, waterproof trousers up front, hat and gloves in the side pockets. An added bonus is that this waist belt can be adjusted to be worn higher over a shirt or lower at the hips on top of running shorts. But, it doesn’t have the water repellent fabric on the back pocket of the Raidlight. I found the Vaporhowe extremely tight and I tried the XL on! Enough said. The most remarkable aspect of the VaporKrar is the fit and I was lucky enough to have several sizes in stock at my local specialty-running store to dial things in.