Dark feathers contain the pigment melanin, which protects feathers against the damaging effects of abrasion and UV radiation.

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Optim insulation is a hybrid material that combines the biostability and flexibility of high-performance silicone rubber with the strength, tear resistance and abrasion resistance of polyurethane, to provide increased durability and flexibility.

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The coastal cliffs and spectacular abrasion platforms of the Cantabrian Coast are bordered by a mountainous landscape rising to heights of 1000 m.

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The result is a tough material that has a low coefficient of friction comparable to that of Teflon and is highly resistant to abrasion.

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The second portion of the video, taken the following day, then shows a striking abrasion.

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"The Hurt Locker" looks at the whole condition of war and endeavor and -- like they say -- war is human abrasion.

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This juxtaposition of old aesthetic values married with the new, sharp edges with soft, and abrasion with comfort should tip you off to the personality disorder belying this 4G LTE handset.

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