From Merrell, the Women's Antora 4 WP Mesh Waterproof Trail Runners feature: Breathable engineered mesh and TPU upper Protective and abrasion resistant toe cap Waterproof membrane seals out water and lets moisture escape Padded collar Bellows tongue keeps out debris Reflective details for increased visibility in low light Elastic lace keeper Cleansport NXT™ treated for natural odor control recycled laces recycled breathable mesh lining FLOATPRO FOAM™ footbed for enhanced cushioningand energy return recycled mesh footbed cover FLEXconnect® dual-directional flex-grooves in the midsole for enhanced ground connection FloatPro™ Foam midsole for lightweight comfort that lasts Merrell Quantum Grip™ durable rubber outsole that enables confidence in the most extreme trail environments Approx. 23.5-16mm stack height Approx. 0.31" drop Approx. 0.112" lug height Imported.