The BERG Weather Cover is intended to keep the trampoline free of twigs and leaves, etc., but it will let water through at the height of the jumping mat to prevent a reservoir of water from building up and weighing down the jumping mat. The BERG Weather Cover can be used on Regular, InGround and FlatGround trampolines. The cover is equipted with hooks for extra strong and easy attachment. Use a BERG Weather Cover for the trampoline for short periods only (no longer than a few weeks) and not for bridging a winter period of several months. If the trampoline is not used for any length of time, it is advisable to clean and dry the protective edge (Padding) thoroughly and then store it in a dry place.