The two best-selling Backpacks currently are the Baby Safety Sling Carrier Cotton Baby Backpack Carrier( Yellow) intl, Waterproof Baby Backpack Carrier (Black) and Side Carry Ergonomic Newborn Wrap Baby Carrier Backpack Sling FrontFacing Infant Organic Basket (Blue) intl. The most popular Backpacks are from DreamKart and Vakind. Backpacks from these brands usually cost about S$ 7.00 to S$ 113.00. Depending on your needs, you can get Slings and Backpacks. Most Backpacks used today are in Yellow, Red and Purple. Up to 82% discounts on Backpacks can be found only on iprice.