If you are looking for comfort and speed on the trails then the Compressport Ultrun Evo 10 trail running backpack is an absolute must. Tested by the best trail runners, it will allow you to easily access every pocket to access what you need and hydrate quickly.
Hydration:

• Two flasks of 500 ml each (included)

Pocket details:

• Large compartment on the back, with top access and Velcro fastening
• Tunnel pocket on the back with velcro strap
• Two front mesh pockets suitable for holding flasks with elastic loops at the top to block and keep them in place
• Small zip pocket on the right shoulder for smaller personal effects
• Additional pockets on the front and easily accessible thanks to comfortable tabs
• Diagonal zip pocket on lower left side to hold phone

Further details:

• Front closure and adjustable with zigzag elastics and slightly rigid side padding that allow the backpack to stay in place
• Elasticated loops with silicone interior for poles
• Adjustable side straps for greater stability and to better adjust the fit
• Whistle included
• Reflective details for safe running even in the dark
• Compressport logo printed
• Weight: 126 gr
• Volume: 15 L
• Material: 93% polyamide, 7% elastane