Letting air circulate around your back, as well as letting you adjust the fit to suit your preferences is this Lowe Alpine Airzone 18 Litre Daysack. With a sternum chest strap, this is easy to keep fastened firmly to you, and upper and lower side compression straps keep it secure on your back. SOS panelSternum strap with whistleStretch water bottle side pocketsUpper and lower side compression strapsZipped front pocketSecure TipGripper walking pole attachmentsSecure internal lid pocketAirZone breathable back maximising airflowForward pull hipbelt adjustmentHipbelt pocketsHydration compatibleKey clipLight loopRain coverCapacity: 18 litresDimensions: 47 x 28 x 22cm