Product descriptionMaterial: Made of neoprene/neoprene rubber, a durable and waterproof material designed to provide lasting protection in all weather conditions. A soft fleece lining provides extra comfort and protection.Use: At low temperatures, lithium-ion batteries may experience reduced battery life. To ensure continuous operation in cold weather, a cold-resistant dust cover made of 5 mm thick insulating neoprene rubber is an ideal solution.Universal fit: Fits frames with a circumference of approximately 28-36 cm, suitable for a variety of e-bike frames, providing a versatile and secure fit.Easy installation: The protective cover has a user-friendly design with a Velcro strap for easy installation and removal. Please note that it is recommended to remove the charging case during charging to avoid overheating the battery.Waterproof and dustproof: This protective case is designed to effectively prevent water and dust damage, ensuring that the battery and stand remain safe in a variety of environments.