Deuter - If you're keen on ventilation, then the Race Air is for you! Weighing no more than 800g, this pack is perfect for one day bike trips. Available now in LazMall:
Deuter Race Exp Air W/3l Reservoir 3207318 70000 for sale online | eBay
Amazon.com: Deuter Modern, Black, 10 L : Sports & Outdoors