Double zipper design Our heavy duty sandbag uses a double zipper system that safely contains filling materials such as sand or stones and prevents leakage during use. This design makes filling and emptying quick and convenient while maximizing safety for outdoor activity. Aluminum eyelets for versatile fixing Each bag has four sturdy aluminum grommets that provide multiple mounting options to secure the bag in different positions. These reinforced points improve stability against strong winds and on uneven surfaces, making it suitable for anchoring canopies, tents, or photographic equipment. Large capacity of 12 kg Designed to hold up to 12 kg of filling material, these sandbags offer excellent holding power compared with standard bags. Ideal for photo studio setups, outdoor events, securing patio furniture, or anchoring canopies. They provide the weight you need while remaining easy to carry. Reliable construction Made of high quality nylon fabric, these sandbags deliver durability and resilience even in humid conditions. Meticulous workmanship ensures they withstand regular use in various weather conditions, with smooth zippers that won't break under pressure. Use scenarios - Stabilize photography equipment in studios or on location, and anchor light stands or tripods during outdoor shoots. - Anchor canopies and tents at outdoor events to resist wind and uneven ground. - Secure patio furniture or other outdoor items during windy conditions to protect your setup.