Keep your feet cool on day hikes big wall approaches casual summer strolls and wild whitewater river rides in Keen's airy Women's Malibu shoes. This sporty and lightweight design features a highly breathable Air Flow micro filament mesh upper that helps improve vapor transfer--but the open top design secured by a Mary Jane elastic webbing closure adds plenty of extra ventilation. This is a lightweight do-it-all shoe that's perfect for surf and trail conditions where keeping your feet comfortable on warm days is a high priority--but additional upper support isn't essential. Beneath the ergonomic footbed is Keen's S3 heel support structure to help support your foot on impact reducing the chance of twisting an ankle on rolling terrain.