Oz Trampolines Trampoline Sandbags Anchor Kit x 4 Made from high grade UV coated taffetta, with an inner pvc sandbag holds up to 12kg dry sand. Secures your trampoline on hard surfaces Extra safety level in strong winds and bad weather conditions. Set of 4 Sandbag Anchor Kit for Trampolines. High-strength waterproof and wear-resistant material,practical and durable. Sandbags are the perfect alternative to the bulky and heavy traditional weights. Protect your equipment and let your booms reach farther by adding a sandbag. stable and safe.