3M DBI-SALA 1113139 ExoFit NEX Construction Harness with Back D-Ring, Tongue Buckle Leg Straps, Tongue Buckle Body Belt & Hip Pad with Side D-Rings, Medium Splice kit to customize portable guardrail system Free-standing guardrail system doesn't require attachment to surface Built-in rail and toe board receptacles on base, order separately Base has integral rubber pad