ADV Skin 12

Salomon

The Salomon ADV Skin 12 is widely regarded by independent gear testers as the gold standard in distance running vests. Designed for ultramarathoners, fastpackers, and trail runners facing long stretches between aid stations, it shines primarily because of its harness design. Salomon's SensiFit construction utilizes stretchy, breathable fabrics that wrap the torso closely, allowing the pack to expand and contract naturally as your lungs work on steep climbs. The Quick Link sternum system makes micro-adjustments possible on the fly without breaking stride. In terms of carrying capacity, the 12-liter volume is deceptively versatile. When packed full with compulsory ultra gear—waterproof jackets, emergency bivy, headlamp, and rations—the pack holds everything flush against the back without excessive swaying. When carrying only water and a phone on an easy hour run, the elastic compression cinches down cleanly, eliminating empty-space bounce. Storage organization is another major strength: the front harness features deep stretch pockets that sit over dual 500-milliliter soft flask sleeves, supplemented by zippered side pockets and a massive rear pass-through kangaroo pocket that lets you grab an extra layer without removing the vest. There are minor drawbacks to consider. The snug, apparel-like mesh design means the vest holds sweat against the body on hot, humid days. Additionally, getting fully filled soft flasks back into the front harness pockets during a hasty aid station stop can require some awkward wrestling, especially as the vest material ages and softens. **Highlights** - SensiFit elastic construction wraps the torso securely to reduce bounce - Dual front chest pockets sized for 500ml soft flasks (included) - Expansive lower-back kangaroo pocket accessible from both sides on the run - Quick Link elastic sternum strap system allows easy micro-adjustments - Back compartment compatible with a hydration reservoir **Watch-outs** - Saturated fabric traps body heat and dries slowly in high humidity - Inserting full soft flasks into front sleeves requires practice and effort - High volume can be overkill for runners who stick to short, supported loops

Pinnacle 12L

Nathan

The Nathan Pinnacle 12L is a premium, lightweight long-distance vest aimed at runners who prioritize pocket accessibility and featherweight comfort. Nathan focused heavily on shedding material weight with this design, producing a full-featured 12-liter pack that weighs roughly 7.5 ounces. It targets marathon and ultra-distance competitors who want substantial gear storage without the dense, heavy feel of traditional mountain running vests. Independent testers consistently praise its gentle, chafe-free perimeter binding and tailored fit across both men’s and women’s models. On the trail, the Pinnacle stands out for its well-organized storage layout. The harness features a tapered shape that keeps weight high on the upper back and shoulders, preventing the lower back sag common in larger packs. Up front, vertical water-resistant zippered pockets sit alongside the flask sleeves, providing a safe, bounce-free compartment for large smartphones. The rear storage consists of a zippered main compartment complemented by an exterior kangaroo stash pocket for stowing windbreakers or gloves. The materials are softer and slicker than standard airmesh, making it particularly gentle against bare skin or thin racing singlets. However, that refined feel comes at a steep price, sitting comfortably above two hundred dollars. Furthermore, the front flask sleeves sit slightly lower and narrower than those on Salomon packs, which some runners find requires tipping their head down further to drink. While the pack compresses well, the ultra-thin materials require sensible packing around sharp gear like trail running poles or hard plastic headlamps. **Highlights** - Lightweight 7.5-ounce chassis built with soft, chafe-free perimeter binding - Dedicated water-resistant front chest pocket protects electronics from sweat and rain - Tapered pack geometry keeps heavy gear balanced high across the shoulders - Accommodates both front soft flasks and a rear hydration reservoir - Multi-point side adjustability provides an adaptable torso fit **Watch-outs** - Top-tier price point makes it an expensive investment for casual runners - Ultralight mesh fabrics require extra care around sharp trail gear - Front flask position can feel low for runners used to higher chest mounts

ADV Skin 12

Best for: Ultra-distance trail runners prioritizing dynamic, zero-bounce ergonomics and rapid on-the-move gear access.

Pinnacle 12L

Best for: Long-distance runners seeking lighter torso coverage, water-resistant storage, and hassle-free flask reloading.