疾风雪靴 are an 配饰 that can be found in 冰雪箱s in the underground 雪原生物群落. When equipped, they allow the player to gain a speed boost after running for a certain distance continuously. Your speed will continue increasing until maximum speed is attained. At full sprint, they will increase your horizontal movement speed by ~40%. (See 冲刺配饰 for more information on the sprint effect.) The 赫尔墨斯靴, the 航鱼靴 and the 疾风雪靴 are functionally identical.