Flexible bladder tanks are made with high-resistance PVC material and are welded with high-frequency (HF) soldering techniques. The bladder walls are made of polyester with PVC induction. The materials used in bladder walls are generally UV resistant and are chosen for their chemical stability and resistance to mechanical abrasion. Additionally, they are fabricated specifically to allow the tank to stand independently of any external support. Different compositions of bladder walls are used to store different types of liquid. For example, a particular design may be suited for hydrocarbon storage but others could be used for liquid fertilizers, chemical products, rainwater, drinking water, or used water.

Installation of a bladder tank is fast and simple but requires a large, flat, open surface free of rocks or other materials that might damage the walls. A fine layer of sand or a special ground cloth is often used to minimize surface irregularities. Ground cloths are generally made from a geotextile fabric designed to minimize the chance of abrasion and tank failure.

Bladder tanks are lightweight, flexible, mobile, and can last for many years. The materials used to make bladder walls are recyclable and can be reused for other purposes. Bladder tanks have capacities of up to 1,000 cubic meters. Liquid stored in a flexible bladder tank does not evaporate and any odor it may produce is completely sealed within the tank.