TGV is a multifilament string from Tecnifibre that is made of bundles of micro fibers, imbued with Polyurethane 400. According to Tecnifibre, the composite micro fiber bundles give TGV its dynamic properties and power. The Polyurethane 400, which makes up 45 percent of the string, can stretch up to 400 percent of its length, providing comfort by reducing shock and vibration. TGV is also coated with Silicone Pyrogene Lubritec (SPL) to improve durability by reducing abrasion that can lead to notching and wear. According to Tecnifibre, TGV is the softest string on the market, and in fact Tecnifibre recommends it for players who want a soft string with maximum comfort.