the leather to bite into the feetcausingthe leather to bite into the feet
fallsto preventfalls
to an 80 % energy saving which is vital when trying to survive in the coldest place on Earthcan leadto an 80 % energy saving which is vital when trying to survive in the coldest place on Earth
his foot ' getting caught on groundto preventhis foot ' getting caught on ground
to a higher risk of injuriesleadingto a higher risk of injuries