These Hydro Lite models with hydration bladder are small and perfectly formed. The thermally lined main compartment keeps anything cold or warm things warm.

mesh shoulder straps and Airstripes back system for allround ventilation
With the zip tabs secured by press studs, the bladder tube can exit directly from the main compartment for instant use
3M reflectors at the front, sides and back
safety blink loop
zipped front pocket
waist strap

Weight: 540 g
Volume: 4 l
Measurements: 45 x 22 x 7 cm (H x W x D)