Our heat-sealed polyurethane spiral is made with two types of processes: with a proprietary welding technique that fixes the tubes permanently, while allowing individual tubes to be separated quickly and easily, and with the thermoforming process which exploits the ability of thermoplastic materials to "memorize" the shape impressed when exposed to heat. Standard products consist of tubes with different colors and shapes defined as follows, but custom solutions allow you to choose colors in any combination, mix different diameters and combine them in almost any configuration.