{HEAD ~ The OSCL} 35 is preferably formed of a polymeric material, e.g., an elastomer such as a polyurethane or {TAIL ~ other materials} well noted in the published literature, and may comprise a material having one or more phases, e.g., a foam or a dispersion of one solid phase in another 
{ HEAD ~ The OSCL } 35 is preferably formed of a polymeric material , e.g. , an elastomer such as a polyurethane or { TAIL ~ other materials } well noted in the published literature , and may comprise a material having one or more phases , e.g. , a foam or a dispersion of one solid phase in another
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