The REFLEX SQUASH, HEAD's most comfortable and high-end multifilament string, is the best option if you're a tour or elite tournament player and power is your thing. The string is incredibly easy on your arm and offers additional comfort because to its unique PU resin and 100% nylon multifilament design. REFLEX combines all the advantages of a premium multifilament string with the extra explosiveness you want thanks to its special material and structure.