【Extra Thick 500D Oxford Fabric & High Durability】 Made with high-quality 500D Oxford cloth. Unlike common covers that are thin and easily torn, this cover boasts excellent durability. It has a moderate weight, making installation and carrying smooth. You can use it with peace of mind for a long time, eliminating the need for disposable covers or frequent replacements, making it economical. 【Waterproof Tape + Fabric Meeting Performance Standards (300D or Higher)】 This cover uses thick fabric of 300D or higher to achieve a waterproof effect. Covers under 300D only have water repellency and may allow water to seep in during heavy rain, but this product firmly prevents rainwater from entering. It protects your important bicycle or motorcycle from getting wet even in sudden downpours. 【Zipper for Battery Replacement】 Equipped with an opening and closing zipper for battery replacement, convenient for electric assist bicycles. You can remove the battery without removing the entire cover, making daily charging and replacement work smooth. 【Two Rear Shape Types - Wide Compatibility】 Two rear designs to choose from according to your needs. The convex-shaped rear type is ideal for bicycles with child seats and scooters (motorcycles and step-through bikes). The flat-shaped rear type is perfect for general electric assist bicycles and city cycles. It is a practical specification that can accommodate various vehicle types. 【UV Cut & Waterproofing】 Uses UV-treated fabric to prevent fading and deterioration from ultraviolet rays. Furthermore, the highly water-repellent coating effectively repels rain, keeping your bicycle clean and beautiful for a long time.