Fabrics:
* Main Body: 40D 85% nylon, 15% elastane stretch woven with FlashDry
* side panels: 88% nylon, 12% elastane power mesh
* Back panel: 86% nylon, 14% elastane warp knit mesh

Specs:
* Volume: 610 cu in / 10 liters

Features:
* FLASHDRY materials offer enhanced moisture management to help keep you comfortable
* Two chest pockets for soft flasks with an elastic valve stabilizer to reduce bounce
* Two 500-ml soft flasks included
* Two lower chest pockets
* Secure-zip chest pocket
* Elastic loops to hold a hydration tube
* Two adjustable bungee sternum straps
* 10-liter pack on back
* Horizontal trekking-pole sleeve
* Stretch side panels
* Side compression straps allow user to adjust tension around rib cage
* Ice-axe carry on back
* Upper and lower easy-access shelves are designed for a modern UTMB kit that includes soft-flask hydration, nutrition and poles
* Whistle included
* Reflective logos
* Lower chest pocket
* Upper and lower sternum strap with S/R buckles
* 10-liter pack on back with a drawstring opening and weather flap
* Upper and lower easy-access shelves for a modern kit that includes soft-flask hydration, nutrition and poles