Thermally　induced　shape　memory　polymers　(SMPs)　are　fragile　and　brittle　when　cooling　to　a　low　temperature　to　generate　temporary　shapes.　In　the　present　study,　the　authors　implement　a　new　design　strategy　for　fabricating　elastomeric　SMPs　with　low-temperature　flexibility　by　engineering　reversible　sacrificial　hydrogen　bonds　into　a　chemically　crosslinked　network.　Compatible,　amorphous,　hindered　phenol　moieties　(Irganox　1010)　are　incorporated　into　epoxidized　natural　rubber　(ENR)　and　the　ENR　composites　are　cured　with　zinc　diacrylate　(ZDA).　Such　reversible　sacrificial　bonds　can　rupture　prior　to　the　rupture　of　the　bonds　of　the　crosslinked　network　during　stretching,　which　will　dissipate　energy　and　facilitate　reorientation　of　the　rubber　chains.　Based　on　the　functional　mechanisms,　ENR　composites　exhibit　unusual　toughness　and　flexibility　and　can　undergo　large　deformations　even　when　below　their　T　g　.　Irganox　1010　can　also　be　used　to　tune　the　glass　transition　temperature　(T　g　)　and　improve　the　chain　mobility　of　the　elastomer　sample　by　providing　sufficient　intermolecular　hydrogen　bonding　interactions.　ENR　composites　demonstrate　thermally　triggered　shape　memory　performance.　Moreover,　the　dissociation/reformation　of　hydrogen　bonds　upon　stretching/cooling　can　endow　the　elastomer　sample　with　unique　reversible　plastics　shape　memory　(RPSM)　performance.　These　SMPs　possess　excellent　shape　fixity　and　recovery.　©　2018　WILEY-VCH　Verlag　GmbH　&　Co.　KGaA,　Weinheim