Made of molded natural rubber, they are still very soft and pliable. No cracking on the Fins themselves, and only some very small cracking on the Heel Straps when "flexed". 

The Straps are the original "Dark Chocolate Brown" color with original single piece stamped Metal Buckles with excellent embossed  "VOIT" logos. No cracks in the Foot Pocket or Anchor Posts either.

Beautifully preserved pair of original VOIT Sail-Fins produced during VOIT'S classic era of California skin diving and early surf culture. This pair has been extremely well cared for and remains one of the nicest examples of Sail-Fins you'll find anywhere. Authentic and complete matching right and left with U.S. Patent No. 2,099,973 and Reissue 23,006 molded in right under the VOIT Sail-Fins logo on the topside of the Fins.

Perfect for collectors of Voit, U.S. Divers, Swimaster, early Scuba, Surf Culture and mid-century sporting goods. Would look great in your Beach House, Boathouse, or Bar. Please see all of the photos and feel free to ask any questions.