{HEAD ~ At least a portion} of the second layers of the fibers 10 in {TAIL ~ each fibrous layer} 100 are fused to at least a portion of other second layers or first layers within the same fibrous layer 100 and at least a portion of the second layers of the fibers 10 of each fibrous layer 100 are fused with at least a portion of the first layers and second layers 14, 14′ of the fibers 10 in an adjacent fibrous layer 100 
{ HEAD ~ At least a portion } of the second layers of the fibers 10 in { TAIL ~ each fibrous layer } 100 are fused to at least a portion of other second layers or first layers within the same fibrous layer 100 and at least a portion of the second layers of the fibers 10 of each fibrous layer 100 are fused with at least a portion of the first layers and second layers 14 , 14′ of the fibers 10 in an adjacent fibrous layer 100
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH