Tretorn’s sturdy boot, handcrafted from natural rubber. Fitted with a weather-resistant rubber lining, a comfortable insole derived from algae and a chunky lug sole. A reinforced heel and a toe cap promise longevity and durability. Waterproof rubber. Biomass insole. Reinforced heel and toe cap. Details Natural rubber outer, YULEX foam lining, BLOOM insole, outsole with good grip, Reinforced heel & toe cap. Waterproof.  Made in China. Heel height 4.5cm.