Tour XR is a co-polyester tennis string from Prince. With the lowest price-point in Prince's Tour line, this co-poly is an obvious choice for big hitters on a budget. Tour XR is made from firm polyester and is definitely meant for the experienced ball striker who values a firm feel and finds the sweet spot more often than not. Ultimately, when this string's low price is added to its exceptional combination of control and feel, the result is one of the better value polys out there.