MILLET Trilogy Sky Vest 5L

Trilogy Sky Vest 5L delivers secure, bounce-free carry for fast alpine movement

What Our Gearhead® Experts Are Saying:

"When I’m scrambling ridgelines or racing through alpine trails, I don’t even notice I’m wearing the Trilogy Sky Vest—it moves with me and keeps hydration and tools exactly where I need them."

Made for fast, high-output days on technical terrain, the Millet Trilogy Sky Vest 5L is a featherlight hydration and gear solution that doesn’t compromise performance. With just the right amount of space for essentials, this 5L pack was born in the mountains and refined through alpine endurance efforts. Whether we’re trail running in exposed zones or pushing the pace on a solo summit bid, it delivers unwavering stability and smart access on the move.

Durable Dyneema® construction and 4-way stretch panels give this pack a snug, bounce-free fit that adapts to our movement. The integrated hydration compatibility, pole and ice axe carry, and mesh stash pockets keep fuel and gear right where we need them—secure and within reach. Adjustable chest straps help fine-tune the fit, making this small pack ideal for steep missions when ounces count and balance matters.

Details

• Minimalist 5L alpine running pack designed for high-mobility performance
• Dyneema® stretch fabric offers exceptional durability and flexibility
• Secure fit with dual removable chest straps and form-fitting construction
• Hydration compatible with dedicated bottle holder and reservoir sleeve
• FPP™ ice axe carry and removable pole holder for technical terrain
• Multiple mesh and zip pockets for organization and quick access
• Optimized for trail running, alpine scrambling, and ridge traverses
• Ultralight design (235g) supports speed-focused objectives
• Item #MILZ05O

Tech Specs

Responsible Collection

Recycled/Repurposed

Material

[face fabric] Dyneema Stretch (48% nylon, 31% elastane, 21% polyethylene, [overlays] 2D Darlington mesh (100% recycled polyester)

Volume

5L (305cu in)

Shoulder Straps

harness-style

Hydration Compatible

yes, up to 2.5L

Reservoir Included

no

Access

zippered side

Pockets

2 soft flask harness strap, 1 zippered top, 1 front mesh, 2 side mesh

Gear Loops

2

Ice Axe Carry

2 FPP

Trekking Pole Carry

2

Dimensions

16.9 x 11.8 x 1.9in

Claimed Weight

8.3oz

Activity

trail running, hiking, ice climbing, mountaineering