In Man met rode mantel op zwart paard, the viewer sees a striking figure of a man dressed in a vibrant red cloak riding a powerful black horse. The contrast between the bright red and the deep black creates a dramatic visual impact. The background is likely a natural landscape, enhancing the sense of adventure and movement.

The man appears confident, embodying strength and nobility. The painting is executed in oil on canvas, a medium that allows for rich color and texture. The artist has used a realistic style, capturing the details of the man's attire and the horse's musculature. The brushwork is precise, showcasing Ost's skill in rendering both human and animal forms.

The dimensions of the work are approximately 100 x 150 cm, making it a substantial piece. Alfred Ost was a Belgian painter known for his historical and genre scenes. This painting reflects his interest in portraying figures from history with a focus on realism. An interesting fact about this work is that it captures the spirit of adventure and heroism, common themes in Ost's oeuvre.

The choice of a red cloak suggests a connection to nobility or valor, enhancing the narrative of the painting.