The rear-entry boot eased one of the most common skier complaints: aching feet. roomy and easy to get on and off , single-buckle boots —like Salomon’s popular SX90 and SX91 models—dominated the market for recreational skiers in the ’80s. Stiffer versions aimed at racers had some success, but World Cuppers clung to top-entry boots. And manufacturers eventually decided that recreational skiers deserved better performance, even if they didn’t realize it.