With a great ratio of weight to capacity, the Osprey Men\'s Stratos 36 litre Daysack serves hikers who may need to carry lightweight camping equipment, overnight gear or extra layers. The Airspeed trampoline back system is superbly comfortable, with a highly breathable mesh to make hiking in warmer weather more enjoyable. Numerous dedicated storage pockets and attachment points extensive but efficient packing and the detachable raincover ensures that you can quickly react to any inclement weather and keep your gear dry. In short, the Stratos 36 is the perfect bag for the day hiker who may need to accommodate the unexpected.Lightweight, technical daysack from Osprey Adjustable Airspeed trampoline suspended mesh back system - superior comfort and breathabilityAdjustable torso length - allows a fine-tuned fitStow-on-the-Go trekking pole attachmentIntegrated and detachable rain coverInternal hydration sleeveInternal key attachment clipSternum strap with emergency whistleZip hip belt and centre pocketsUnder lid zip mesh pocket - for secure essential storageRemovable sleeping pad strapsSide compression strapsSingle ice axe loopCompatible with all Hydraulics and Hydraulics LT reservoirsDimensions (max): 79cm (L) x 33cm (W) x 33cm (D)Weight: 1.49kgRecommended activity - walking / hiking / travelling