The Rollerblade Women's Activa 90 Fitness Inline Skates offers a higher and more supportive cuff than that found on the lower profile Tempest line. Also at 90mm, but the Activa is more of an all-around performance skate able to be used for fun, fitness or training. The added support in the cuff helps those beginning to skate longer sessions by addressing fatigued areas. The Crossfire also has a slightly smaller frame than the Tempest which allows it to more accommodating and maneuverable on shorter skates sessions. Light, strong, and smooth have been synonymous with the Rollerblade Activa for years. A great pair of all-around fitness inline skates for fun or for fitness.