An inflatable float tank for providing a therapeutic sensory deprivation session. The inflatable float tank includes opaque inflatable sidewalls including a drop-stitch material. The drop stitch material includes opposing walls with stitched threads extending at acute angles from one another. When uninflated these internal stitch structures are allowed to collapse and provide substantially foldable and pliable deflated sidewalls as opposed to substantially rigid sidewalls upon inflation. The inflatable float tank is filled with float solution including water and Epsom salt heated to skin temperature so as to provide a highly buoyant float environment with a lack of sensory stimulation. The inflatable float tank exhibiting improved insulation within the tank and ease of assembly. The inflatable float tank and assembly thereof doesn't require rigid support structures such as poles and joints. And, the inflatable float tank is substantially foldable in an uninflated state and is substantially rigid in an inflated state.