Amazon is selling a 'must-have' $30 travel backpack for only $18, and it 'packs like a suitcase'

TheStreet aims to feature only the best products and services. If you buy something via one of our links, we may earn a commission. Traveling can be stressful in general, let alone when you're trying to navigate your way through the airport with a carry-on handle in one hand and a personal item in…