The Osprey Duro 6 represents the pinnacle of long-distance trail running performance, developed alongside elite athletes to conquer iconic races like the UTMB. Engineered for dedicated runners who demand a bounce-free, stable carry, this 6-litre vest utilizes bluesign® approved, 100% recycled 75D polyester with a touch of spandex for a race-optimised, body-hugging fit. The internal construction features highly breathable 30D polyester airmesh, ensuring maximum moisture management during high-output efforts. Its ultralight, soft, and packable materials are designed to eliminate distractions, allowing you to focus entirely on the trail ahead. Whether you are chasing a course record or navigating technical alpine terrain, the Duro 6 offers the perfect balance of weight savings and durability for elite-level endurance racing and unsupported training.

Functionality is at the heart of the Duro 6, featuring an innovative pocketing system designed for seamless gear access without breaking stride. The vest includes two 500ml Hydraulics Soft Flasks housed in bounce-free harness pockets, complemented by a spacious pass-thru lumbar pocket and an upper back stash for quick-access layers.  Finished with dual adjustable elastic closure cords and a restricted-stretch backpanel, this vest ensures your gear remains stable and secure through every aggressive descent.

Osprey Duro 6 Features

• Two Hydraulics 500 ml Soft Flasks included
  
• Dual lightweight and adjustable elastic vest closure cords
• Front flask pockets with bounce-free patterning and bungee securement
  
• Upper back stash pocket
• Upper zippered pocket with internal cord to secure bulky items
• Vertical-zip front pocket
• Four stretch drop-in pockets
• Removable trekking pole dual-carry system enables front carry or lower-back horizontal carry
• bluesign® APPROVED, 100% recycled 300D polyester, DWR treatment made without PFAS

Weight: 420g
Vest fit range is based on chest circumference at the widest part of the chest slightly below the armpits:
Medium: 37-42.5 in
Large: 42.5-46.5 in