PRONATION: Pronation is part of the natural movement of the human body and refers to the way your foot rolls inward for impact distribution upon landing. Understanding your pronation type can help you find a comfortable running shoe. The GEL-QUANTUM 360 5 is made for Neutral.TRUSSTIC SYSTEM TECHNOLOGY: Reduces the weight of the sole unit while retaining the structural integrity of the shoe. – SOLYTE MIDSOLE MATERIAL: A lighter weight midsole compound than ASICS standard EVA and SpEVA midsoles. Also features enhanced cushioning and durability.ORTHOLITE LASTING: This lasting material features plush underfoot comfort while providing excellent moisture management and a high level of breathability (Ortholite is a registered trademark of ATP Manufacturing LLC.)ORTHOLITE SOCKLINER: Moisture management (Ortholite is a registered trademark of ATP Manufacturing LLC). – AHAR OUTSOLE Acronym for ASICS High Abrasion Rubber. Placed in critical areas of the outsole for exceptional durability.REARFOOT AND FOREFOOT GEL TECHNOLOGY CUSHIONING SYSTEM: Attenuates shock during impact and toe-off phases, and allows movement in multiple planes as the foot transitions through the gait cycle. – SEAMLESS CONSTRUCTION: The use of seamless materials reduces the potential for irritation and friction caused by traditional stitches and seams.