Designed for cruising the streets or hiking the trails, the Quasar carries the essentials for 5 Reviews | Write a Review O/S, in 3 / 28 l, 20h x 13w x 11d in. Both the Quasar and Questa fall under Ospreys 24/Seven Series which are designed to “bring superb organisation, comfortable carry and. Osprey Quasar 28 Men Rucksack O/S · Review Stars (2). EUR 51,63 - EUR 98,00 OSPREY Tagesrucksack Quasar 28 black · 5,0 von 5 Sternen 2. EUR 51.