The membranes are the "guts" of your inflatable. Generally, membranes give the inflatable its structural integrity, through sheets sewn into the inside of the inflatable. In bouncers, these membranes run along the bounce floor in a series of channels which attach the base of the inflatable to the top of the bounce floor at the seams. This gives the floor its visible rolling surface pattern, and gives the unit its bounce. During use, the membranes expand and contract as the user jumps up and down.

Unfortunately, because the membranes are inaccessible to the the buyer, some manufacturers may cut corners in the membranes used. This can include using poor/reduced material specs, or assembling scraps of materials into patchwork membranes, which fail much earlier than proper membranes.

Blast Zone Commercial Inflatables use High-Tensile membranes, reinforced with a one-inch polypropylene reinforcement strip on the membranes attachment points. This results in flexibility in the membrane with added durability of the seams, because they are attached onto the reinforced areas, rather than directly to the membrane.