Go Green! Our Hi/Lo series of liners help meet source reduction guidelines by conserving resources and reducing municipal solid waste. Made from a blend of virgin linear low and high density polyethylene, these ultra-strong liners are made to replace "repro" style bags. They provide greater consistency than repro bags and unmatched puncture resistance. If you're using heavy gauge repro liners, consider Colonial's competitively priced Hi/Lo replacements.