Atlas 2008 8 Series Snowshoe Spring-Loaded Suspension - allows natural articulation of the foot and deeper crampon penetration Strapp binding - no hassle with excellent arch support, gender-specific last and uniloop pull. 6061 aluminum V frame geometry - facilitates a natural stride Tempered Steel Twin-Trac Toe Crampon and Tempered Steel Heel-Cleat Nytex Decking