Leaving bicycles under a tarpaulin is a compromise everyone recognises: the cover slips, water collects in the folds, and by spring the chains have surface rust. A proper fan-shaped shelter costs little more and solves the whole problem. This one measures 86.22 by 61.02 by 68.11 in and takes four to five bikes, which suits most households, and its shape lets it sit flush against a wall or fence rather than eating into the middle of a yard. One wide zippered door keeps the structure simple and the seal tight. Fewer openings mean fewer paths for driving rain, and the door still opens far enough to walk a bike through without lifting it. The cover is silver-coated 210D Oxford with a professional-grade dual waterproof coating rated PU4000 and full-coverage waterproof tape along the seams, while sunshade treatment slows the material breaking down in strong sunlight. Underneath, reinforced fiberglass poles in a multi-point triangular structure keep the shelter stable when the wind picks up.