Chipmunk brown/black leather/fabric two-tone chunky Chelsea boots from GANNI featuring chunky rubber lug sole, two-tone design, panelled design, elasticated side panels and double pull-tab at the opening. POSITIVELY CONSCIOUS: This brand measures the impact of every item they produce and supplies a Carbon Neutral Certification with each purchase, which measures the environmental impact of production and shows that they've covered the cost of making the carbon footprint neutral..