Win one of two pairs of Flipslide sandals by Biome – the simple and sustainable alternative to flip-flops. Flipslides are made of renewable materials, manufactured in a way to keep waste low and are affordable. All FlipSlide components are made of natural rubber, sustainably tapped from rubber trees in a similar manner as maple syrup is extracted from a maple tree. This differs to the materials commonly found in flip-flops; synthetic rubber and polyurethane foam, which are both derived from petroleum, damage our environment and clog our oceans. Flipslides are kind to the earth, your feet and your wallet, priced at only $34.00.