With a concentration on upper fit and the plush ride that fans of the shoe expect this update will enhance the GEL-Cumulus series' reputation for cushioned excellence. With a reprise of the broad midsole platform specs of previous versions the GEL-Cumulus 13 will continue to provide a suprisingly stable ride making it appropriate for gaits ranging from underpronator to mild overpronator. Color(s): White/Royal/Black. Type: Running. Weight: approx. 11.8 oz. Upper: Reflectivity 3M reflective material enhances visibility during low light hours. Midsole: Solyte midsole material is lighter than ASICS standard EVA and SpEVA combined with improved cushioning and durability. Rearfoot & Forefoot GEL cushioning system enhances shock attenuation and allows for improved toe-off position. Outsole: AHAR Heel Plug high abrasion resistant rubber is placed in critical areas of the outsole. DuraSponge is a blown AHAR rubber compound for enhanced cushioning and durability in the forefoot. Sockliner: ComforDry Sockliner. Last: Full Length Solyte 45 Lasting.