This special edition of the Axiom S2 features Challenge Sailcloth's ULTRA™ 400 fabric. The Challenge ULTRA™ line of fabrics is composed of the highest performing UHMWPE composite fabrics in the world.  In a class of its own, ULTRA™ represents a new paradigm in durability and weight.  ULTRA™ weave is constructed with an optimal blend of UHMWPE & high-tenacity polyester.  The tight weave is laminated with an eco-friendly adhesive to the revolutionary Challenge RUV™ film.  The result is a textile that is incredibly strong, lightweight, and waterproof to 200 psi.  ULTRA™ performs in the harshest environments, in both sub-zero and tropical climates. ULTRA™ 400 is: Incredibly Lightweight Abrasion Resistant Hydrophobic UV & Chemical Resistant Cut & Tear Resistant The Axiom S2 is the evolution of the core principles that have made the Axiom platform so effective across diverse urban mission profiles.  The S2 reflects the discreet, configurable, and secure foundations of the award-winning Axiom 24 in a streamlined package for new adventures. Built around a paradigm of top-down usage, Axiom organizes your gear and provides exceptional access even in constrained environments such as airplane and car seats.  Key Features: High-aspect backpanel maximizes airflow Side-panel access to both the main compartment and laptop compartment Full height vertical pockets in both the admin and main compartments Two gusseted vertical pockets in main compartment store common items like powerbanks and chargers Conceived as a flexible carry system for daily adventures and key companion for journeys abroad, Axiom adapts to your changing needs and seamlessly manages chaos.