First introduced by Sierra Designs in 1968, the 60/40 parka quickly became an iconic staple among mountaineers and outdoorsmen. The jacket took the name from its unique material composition: 60% cotton and 40% nylon. The result was a durable, water-resistant fabric that remained lightweight and soft to the touch. As rugged as it is stylish, a 60/40 is ideal for anyone having to brave a particularly cold and wet autumn. Or those who simply want to appear up for the challenge. Here are this season's top picks. - Daniel Small
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