Flat sandals, platform sandals, strappy styles, back-strap school and work sandals, and heeled sandals. Back straps hold the foot securely, which is safer for walking and riding than slides. Grooved rubber soles grip better in the rainy season, and Velcro or buckle straps adjust to fit wider feet. If your feet sweat a lot, avoid very stiff synthetic straps. Ranked by the independent usdxu score.