[Package Content] You will receive 2pcs aquarium heater protection sleeves, enough quantity for your daily needs. [Size]The length of our aquarium heater protective cover is 24.5cm. Please measure the size you need before purchasing. Material: Our aquarium heater protective cover is made of high quality plastic, which is strong and durable, high temperature resistant and abrasion resistant. [Application]Our aquarium heater protective case is a very practical heating accessory that can be used to protect aquarium creatures from being burnt by heating. Unique Design: Our aquarium heater protective cover has a suction cup, which is very convenient to install. The set adopts detachable design and can be spliced and disassembled.