We only use genuine rubber in our rubber straps. Its wearing comfort and anti-allergic properties are unrivalled. Under normal conditions of use a rubber strap will last up to four years. However, exposure to sun, salt water, chemicals / oils / cosmetic products or perspiration may cause premature deterioration. We therefore suggest for the everyday cleaning (especially after diving) to rinse with soapy lukewarm water, but without using a brush. Applying some deer sebum rubber care ointment on a regular basis will greatly extend the lifespan of your genuine rubber strap.