Despite the sweltering heat, open-toe socks designed for flip-flops are emerging as an unlikely fashion item. Flip-flops are traditionally worn with bare feet, but the convention-defying look is gaining attention as a new trend. Flip-flop straps can rub against the instep when worn on bare feet, and the fabric helps prevent chafing. Once widely dismissed as a "fashion disaster," the combination has become a deliberate fashion statement. The look fits into a broader customization trend among Millennials and Gen Zers in Korea, following recent fads for decorating shoes and bags with small accessories.