Made of reliable materials, safe and durable for long time using. This water level gauge is a practical and necessity checking tool for you, it is very useful and helpful for checking the level of water. You can get a precise and accurate data, and it is reflective, brings you convenience. Features -Color:Blue -Material:adhesive film -Size:100.00X10.00X0.20cm/39.30X3.93X0.08in - Suitable for all kinds of pool, easy to install with self-adhesive design, can be a great convenience for you. - Resistant to sun and high temperatures. Designed for outdoor use, the sturdy material will last a long time and meet your needs. - Clear scale, reflective design, easy to understand, can intuitively see the water level. - It can be stuck in the pool firmly, not easy to fall off, very durable and practical to use. - Simple operation, easy to use, suitable for a variety of scenarios. Package list: 1 Level Gauge