5mm thick natural rubber bonded to an anti-microbial and non-slip cork mat surface designed to grip with moisture. Only Recyclable Organic materials used in this Natural Yoga Mat - Zero Plastic or chemicals used in production. 1 Native Irish tree planted locally for every one sold. Premium mat with a simple, elegant design. Zero plastic used in packaging or production. Cork is a nonslip surface which increases grip when wet. Cork yoga mat is a naturally antimicrobial surface, which makes it a safer option and kinder for your skin. 100% biodegradable non-slip surface cork mat. Cork mats bonded to a black natural rubber base provide a soft yet firm base for any ground- based exercise, as well as a comfortable base for any standing exercise. A great addition to any indoor calisthenics home gym or outdoor fitness stations as the cork mat can be used indoor or outdoors. Can be used as a calisthenics training mat or as a yoga mat. Can used as base for practicing handstands or any other gymnastics stuff.