1. Space-efficient: Square buckets utilize storage space more efficiently than round buckets, as they can be stacked neatly side by side without any wasted air space. This allows for maximum use of shelf and storage spaces.

2. Durability: Square buckets are made of high-quality plastic that is strong and sturdy, providing excellent protection for the contents inside. They are less prone to cracking or breaking under pressure, making them an ideal choice for transporting heavy or fragile items.

3. Ease of transportation: Due to their shape, square buckets are easy to transport and maneuver. They can be stacked on pallets, minimizing the space needed for transportation, and can be easily loaded and unloaded from trucks.

4. Labeling: Square buckets offer a larger surface area for labeling and branding, making it easy for manufacturers to promote their products and provide necessary information to consumers.

5. Customizable: Square buckets can be custom-made according to the specific needs and requirements of the product being packaged. They come in different sizes, colors, and materials, allowing for greater flexibility in packaging design.

Overall, square portable buckets offer numerous advantages that make them a popular and practical choice for packaging products that require durability, space-efficiency, and easy transportation.