buy 2 get 10%, buy 3 get 15% off
Source:
https://www.bagsmart.com/collections/buy-2-get-10-buy-3-get-15-off
Zoraesque 14L Featherlight 13.3 Inch Backpack
Soar 6L Camera Sling
Falco 40L Expandable Airline Approved Carry On Travel Backpack