The CamelBak Nano Vest is a minimalist running hydration pack optimized for trail and ultra runners seeking the lightest carry possible. Updated for 2019, it weighs just 140 g and integrates two 500 ml Quick Stow™ flasks (34 oz total) with a dual adjustable sternum strap system. Its 3D micro‑mesh harness maximizes breathability and comfort, while stretch pockets and trekking‑pole attachments provide secure storage without excess bulk. Reflective detailing and an included safety whistle enhance on‑trail visibility and security.

• Hydration capacity: 1 L (34 oz) via two 500 ml Quick Stow™ flasks
• Gear capacity: 1.5 L (90 cu in) in stretch pockets and small‑item sleeves
• Pack weight: 140 g (4 oz)
• Harness: 3D micro‑mesh for multidirectional airflow and cushioning
• Sternum straps: dual adjustable for custom fit and stability
• Pockets: secure phone pocket; stretch overflow pockets; trekking‑pole carry loops
• Safety: integrated whistle and reflective accents for low‑light visibility