2026 New Hyperlite Mountain Gear PEMI 15 Trail Running Vest

"When moving through the wilderness for long periods, fluidity equals efficiency, and efficiency equals speed." — Will P.

Lightweight design: Only 12.8 ounces (approx. 363 grams)
Precision fit for your chest size

Chest size reference:
Size S: 34-38 inches
Size M: 38-41 inches
Size L: 41-43 inches
Size XL: 43-46 inches

Product Description

The PEMI 15 redefines the standard for high-performance trail running packs. This low-capacity hybrid running vest perfectly combines lightweight design with durability, utilizing revolutionary ALUULA 97 material and heat-welded technology to take waterproof performance to a whole new level. Designed for long-distance challenges where ultimate freedom of movement and easy gear access are essential. Whether you're tackling an ultramarathon that requires carrying a large amount of water, navigating technical terrain with an ice axe, or simply looking for a high-performance, low-capacity vest that can handle all types of weather, the PEMI 15 is your key partner to stand on the podium—whether the finish line is met with the cheers of thousands or only the silence of the mountains.

Core Advantages

· Stable Fit System: The fully fitted vest design keeps the center of gravity close to the body, effectively reducing pack sway. Paired with highly breathable mesh for ultimate comfort.
· Premium ALUULA 97 Material: Features an ultra-high molecular weight polyethylene (UHMWPE) core, achieving the perfect balance between durability, lightweight design, waterproof performance, and advanced welding technology.
· 3D Support Back Panel: Made from welded foam material, it conforms to the contours of your back and provides firm, comfortable support for the extra gear needed during long-distance travel or in extreme environments.

Detailed Features

· Material and Construction: Made from ALUULA 97 (with a UHMWPE core), combining lightweight design, strength, waterproof performance, and cutting-edge welding technology.
· Practical 15L Capacity: Large enough to hold spare clothing and extra gear for multi-day trips.
· Shoulder Strap System: The fully connected vest design stabilizes the center of gravity and reduces sway. The highly breathable air mesh significantly improves comfort during extended wear.
· Breathable Back Panel: The welded foam back panel conforms to your body, providing an excellent support structure for carrying loads during long treks or in bad weather.
· Hydration System: Compatible with hydration bladders, with a pre-routed hose port in the back panel that easily passes through the pack to improve running efficiency. The hydration bladder compartment is located outside the main compartment to help keep the interior of the pack dry.
· External Storage: Ample pocket configuration: 2 soft flask pockets, 2 large front pockets, 2 zippered pockets, 2 side pockets, plus an adjustable chest buckle. The right-side soft flask pocket also integrates a lightweight emergency whistle for quick access.
· External Expansion: The front features a durable UHMWPE elastic mesh pocket for quickly storing wet clothing, paired with a full-length webbing loop that offers endless possibilities for attaching external gear.
· Quick Access: #5 YKK two-way side zippers let you access items inside the pack in seconds.
· Roll-Top Closure: Paired with vertical compression straps, the pack's capacity can be adjusted based on its contents, ensuring a stable, compact load while enhancing protection.
· Top Compression Straps: Detachable top straps connect to welded UHMWPE webbing loops, providing additional compression and storage options.
· Side System: Two sets of detachable cord loops make it easy to stow trekking poles at the bottom of the pack while on the move. Vertical pole/ice axe compression straps also efficiently secure ice axes.

Detailed Specifications

· Materials: ALUULA 97, breathable air mesh, UHMWPE elastic mesh, Lycra elastic mesh
· Capacity: 15 liters
· Back panel width: 8.25 inches / 21 cm
· Pack height: 23 inches / 58.4 cm
· Top circumference: 23.75 inches / 60.3 cm
· Bottom circumference: 19 inches / 48.3 cm
· Country of origin: Mexico