Spring Cover for 10ft Trampoline -305-312cm Blue This spring cover from JUST FUN is a reliable way to protect your trampoline springs from damage caused by weather conditions and mechanical damage. - Thanks to the collar, you will also ensure your safety by preventing direct contact with the springs. The cover is made of a durable and resistant material filled with soft foam and is extremely practical – when folded, it takes up very little space. The presented collar fits trampolines with a diameter of 305-312-10 ft. Technical data: brand: Just Fun intended for trampolines: 305-312 cm collar width: 25 cm overlap height: 9 cm