Update your weekend assortment with these Tonga 25 sandals from Josef Seibel. Crafted from supple leather with a leather lining and footbed, this shoe has three straps over the foot with secure rip tape fastenings. The sole is lightweight, flexible and highly durable for comfort and ease of movement. Wear with casual separates during the warmer months. Josef Seibel. Flexible Sole. Low. Flat. Leather. Upper: Leather, Sole: PU, Lining: Leather. Sandals.