Developed using the blueprints of the archival Chameleon family and its esteemed history, the Cham Storm is an iconic Merrell silhouette reimagined from the ground up for modern performance and lifestyle wear Features: GORE-TEX waterproof membrane, exceptional breathability and waterproof performance Textile and TPU upper Toggle lace closure for easy on and off 60% Recycled Polyester% recycled laces Elastic lace keeper Molded TPU heel counter for security 100% recycled heel pull tab webbing 100% recycled webbing Breathable mesh lining 50% recycled removable EVA foam footbed 50% recycled mesh footbed cover Cleansport NXT™ treated for natural odor control FloatMax™ Foam midsole for a soft and smooth underfoot experience Rubber outsole Half pair weight: 0lbs-14.28oz, 405g