What's the best budget travel camera bag?

Among the candidates we reviewed, the K&F Concept Lightweight Camera Backpack (around $25) and the MOSISO sling and backpack lines (roughly $30-$57) carry the strongest combination of low price and high verified-purchase ratings. They consistently land at 4.6-4.7 stars across thousands of reviews, though none carry the independent expert testing data that would let us vouch for long-term durability.