SA polymer; the poly is elected form the group consisting of {TAIL ~ Hytrel®} 4056 polymer and {HEAD ~ Riteflex® polymer}; the elastomer is made from polyolefins, and is Engage® elastomers, the elastomer is made from a poly, and is Estane® elastomers, the elastomer is made from a poly, and is Estane® elastomers, the elastomer is made from poly, and is Kraton® elastomers; and the poly polymer is KynarFlex® 2800 polymer 
SA polymer ; the poly is elected form the group consisting of { TAIL ~ Hytrel ® } 4056 polymer and { HEAD ~ Riteflex ® polymer } ; the elastomer is made from polyolefins , and is Engage ® elastomers , the elastomer is made from a poly , and is Estane ® elastomers , the elastomer is made from a poly , and is Estane ® elastomers , the elastomer is made from poly , and is Kraton ® elastomers ; and the poly polymer is KynarFlex ® 2800 polymer
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