An aqueous inkjet ink composition having a viscosity of at least 1 centipoise (1 mPa-sec) and up to and including 100 centipoise (100 mPa-sec) at 25°C, and comprising: (a) an aqueous solvent medium, (b) a non-crosslinked, crosslinkable polyurethane having an acid number of at least 25 and up to and including 35, and a glass transition temperature (T g) of up to and including 40°C, the non-crosslinked, crosslinkable polyurethane derived from: 1) an aromatic diisocyanate; and 2) a diol mixture of at least D 1, D 2 and D 3 diols, and optionally including a D 4 diol, wherein: the D 1 diol comprises a C 3 to C 7 aliphatic group between two hydroxy groups, and at least one pendant carboxy group or pendant neutralized carboxy group, the D 2 diol comprises a chain of one or more repeating C 2 to C 6 alkylene oxide groups and has a weight average molecular weight of at least 250 and up to and including 3,000, the D 3 diol is an alkoxylated bisphenol A or an aliphatic cyclic diol that is present in an amount of at least 5 mol %, based on the total molar amount of the D 1 through D 4 diols in the diol mixture, and the D 4 diol is a hydroxy-terminated polybutadiene having a weight average molecular weight of at least 1000, and when present, is present in an amount of at least 0.1 mol % and up to and including 5 mol %, based on the total molar amount of the D 1 through D 4 diols in the diol mixture; (c) a dispersed pigment colorant; (d) a humectant or organic co-solvent; and (e) optionally, a crosslinking agent. (a) an aqueous solvent medium, (b) a non-crosslinked, crosslinkable polyurethane having an acid number of at least 25 and up to and including 35, and a glass transition temperature (T g) of up to and including 40°C, the non-crosslinked, crosslinkable polyurethane derived from: 1) an aromatic diisocyanate; and 2) a diol mixture of at least D 1, D 2 and D 3 diols, and optionally including a D 4 diol, wherein: the D 1 diol comprises a C 3 to C 7 aliphatic group between two hydroxy groups, and at least one pendant carboxy group or pendant neutralized carboxy group, the D 2 diol comprises a chain of one or more repeating C 2 to C 6 alkylene oxide groups and has a weight average molecular weight of at least 250 and up to and including 3,000, the D 3 diol is an alkoxylated bisphenol A or an aliphatic cyclic diol that is present in an amount of at least 5 mol %, based on the total molar amount of the D 1 through D 4 diols in the diol mixture, and the D 4 diol is a hydroxy-terminated polybutadiene having a weight average molecular weight of at least 1000, and when present, is present in an amount of at least 0.1 mol % and up to and including 5 mol %, based on the total molar amount of the D 1 through D 4 diols in the diol mixture; 1) an aromatic diisocyanate; and 2) a diol mixture of at least D 1, D 2 and D 3 diols, and optionally including a D 4 diol, wherein: the D 1 diol comprises a C 3 to C 7 aliphatic group between two hydroxy groups, and at least one pendant carboxy group or pendant neutralized carboxy group, the D 2 diol comprises a chain of one or more repeating C 2 to C 6 alkylene oxide groups and has a weight average molecular weight of at least 250 and up to and including 3,000, the D 3 diol is an alkoxylated bisphenol A or an aliphatic cyclic diol that is present in an amount of at least 5 mol %, based on the total molar amount of the D 1 through D 4 diols in the diol mixture, and the D 4 diol is a hydroxy-terminated polybutadiene having a weight average molecular weight of at least 1000, and when present, is present in an amount of at least 0.1 mol % and up to and including 5 mol %, based on the total molar amount of the D 1 through D 4 diols in the diol mixture; the D 1 diol comprises a C 3 to C 7 aliphatic group between two hydroxy groups, and at least one pendant carboxy group or pendant neutralized carboxy group, the D 2 diol comprises a chain of one or more repeating C 2 to C 6 alkylene oxide groups and has a weight average molecular weight of at least 250 and up to and including 3,000, the D 3 diol is an alkoxylated bisphenol A or an aliphatic cyclic diol that is present in an amount of at least 5 mol %, based on the total molar amount of the D 1 through D 4 diols in the diol mixture, and the D 4 diol is a hydroxy-terminated polybutadiene having a weight average molecular weight of at least 1000, and when present, is present in an amount of at least 0.1 mol % and up to and including 5 mol %, based on the total molar amount of the D 1 through D 4 diols in the diol mixture; (c) a dispersed pigment colorant; (d) a humectant or organic co-solvent; and (e) optionally, a crosslinking agent.