Polyethylene-based composition and biaxially oriented polyethylene-based articles

A polyethylene-based composition comprising:

• an ethylene-based copolymer produced from ethylene and one or more C3-C10 alpha olefin comonomers,
• wherein the ethylene-based copolymer has:
• a density ranging from 945 kg/m3 to 961 kg/m3 according to ASTM D792,
• a melt flow rate (MFR2) ranging from 0.5 g/10 min to 3.0 g/10 min according to ASTM D1238 at 190° C./2.16 kg,
• a Z average molecular weight (Mz) ranging from 180,000 to 450,000 g/mol,
• a molecular weight distribution (Mw/Mn) ranging from 5 to 25, and
• a stress exponent ranging from 1.0 to 1.5.