Manufactured by a top European manufacturer exclusively for EIEI. Top quality Textured Silicon Rubber, This strap offers superior flexibility and is extremely resistant to the cracking. If your after a highly durable divers strap - this item will not disappoint in terms of durability, feel or look.. Handcrafted / finished throughout. As you can see above this strap works great with IWC Aquatimer. Well suited to Military, chrono and dive watches. 100% waterproof and highly resistant to chemical degradation, ie. oil, detergents and other substances that would destroy a leather watchstrap.