Both the Quasar and Questa fall under Ospreys 24/Seven Series which are designed to “bring superb organisation, comfortable carry and. The sleek Osprey Quasar 28 Daypack is perfectly sized to carry your laptop and tablet in padded protection, along with a Select a row below to filter reviews. Buy the Osprey Packs Quasar 28L Backpack online or shop all from Backcountry. com. Review Summary. 5 Stars. 10 4 Stars. 0 3 Stars. 1 2 Stars. 0 1 Stars. 0.