A forming tube for forming and reinforcing a concrete column includes a tubular lining and a fiber-reinforced composite shell. The tubular lining is made from a first material, and has inner and outer tubular surfaces. The inner tubular surface has a plurality of ridge units displaced from one another in a direction of an axis. Each ridge unit has a plurality of ridges displaced from one another in a circumferential direction. The fiber-reinforced composite shell is made from a second material different from the first material, and is configured to enclose the outer tubular surface. The fiber-reinforced composite shell is formed by winding a prepreg filament on the outer tubular surface, followed by curing the prepreg filament.

A centralizer comprises a first collar, a second collar, a plurality of bow springs coupling the first collar to the second collar, and a plurality of particulates disposed on an outer surface of at least one bow spring. One or more of the first collar, the second collar, and the bow springs comprises a composite material. In some embodiments, the centralizer comprises a third collar, wherein the plurality of bow springs comprise a first portion of bow springs and a second portion of bow springs, and wherein the first portion of the bow springs couple the first collar to the third collar and the second portion of the bow springs couple the second collar to the third collar.

A prophylactic device includes a base for receiving a portion of a body, a tip for containing body fluids, and a tubular body in between. The tubular body includes at least one area with a textured pattern, including lines running along the tubular body (e.g., lines running in at least three directions) that form shapes on the tubular body with portions of the lines forming edges of the shapes (e.g., circles, ellipses, polygons, etc.). The textured pattern forms a reinforcing mesh that wraps around the tubular body. A mold can be used for making the prophylactic device, where the mold includes different portions for receiving material(s), and is shaped to form the material(s) into the base, tip, and tubular body of the prophylactic device.

A therapeutic, fitness, and sports enhancement device including a cylindrically shaped core, and an overlay about the core including a plurality of shaped projections configured to enhance mobilization of soft tissue and optimize body core strength and balance training.

A therapeutic, fitness, and sports enhancement device which includes a cylindrically shaped body having a predetermined density and predetermined diameter, the body including a plurality of projections of a predetermined shape. One or more of the predetermined density and the predetermined diameter in combination with the predetermined shape of the projections optimize mobilization of soft tissue structures of the human body.

A therapeutic, fitness and sports enhancement device which includes a cylindrically shaped body having a predetermined density and predetermined diameter, the body including a plurality of projections of a predetermined shape. One or more of the predetermined density and the predetermined diameter in combination with the predetermined shape of the projections optimize mobilization of soft tissue structures of the human body.

A therapeutic, fitness and sports enhancement device which includes a cylindrically shaped body having a predetermined density and predetermined diameter, the body including a plurality of projections of a predetermined shape. One or more of the predetermined density and the predetermined diameter in combination with the predetermined shape of the projections optimize mobilization of soft tissue structures of the human body.