A population of capsules comprising a plurality of capsules, the capsules comprising: a core comprising a benefit agent; and a polymeric shell surrounding the core, wherein the population of capsules comprises a delta fracture strength percentage of 15% to 230% and a mean shell thickness of 20 nm to 400 nm, the population of capsules obtainable by dispersing droplets of a disperse-phase in a continuous phase by passing the disperse phase through a plurality of holes in a membrane, from a first side of the membrane to a second side of the membrane and into the continuous phase, while the continuous phase is flowed across the second side of the membrane and the membrane is mechanically moved, wherein the disperse phase includes a polymer precursor, a process aider, and a benefit agent, and the continuous phase includes water, and upon exiting the plurality of holes on the second side of the membrane, the disperse phase is formed into droplets of disperse phase; and exposing the dispersion of droplets of disperse phase in the continuous phase under conditions sufficient to initiate polymerization of the polymer precursor within the droplets of disperse phase, wherein the polymer precursor becomes insoluble in the disperse phase and migrates to the interface between the disperse phase and the continuous phase, wherein the benefit agent remains in the core after polymerization, a stabilizer system is present in one or both of the disperse phase and the continuous phase, one or both of the disperse phase and the continuous phase comprises an initiator, and the polymer precursor is soluble in the disperse phase and comprises a multifunctional ethylenically unsaturated monomer. a core comprising a benefit agent; and a polymeric shell surrounding the core, wherein the population of capsules comprises a delta fracture strength percentage of 15% to 230% and a mean shell thickness of 20 nm to 400 nm, the population of capsules obtainable by dispersing droplets of a disperse-phase in a continuous phase by passing the disperse phase through a plurality of holes in a membrane, from a first side of the membrane to a second side of the membrane and into the continuous phase, while the continuous phase is flowed across the second side of the membrane and the membrane is mechanically moved, wherein the disperse phase includes a polymer precursor, a process aider, and a benefit agent, and the continuous phase includes water, and upon exiting the plurality of holes on the second side of the membrane, the disperse phase is formed into droplets of disperse phase; and exposing the dispersion of droplets of disperse phase in the continuous phase under conditions sufficient to initiate polymerization of the polymer precursor within the droplets of disperse phase, wherein the polymer precursor becomes insoluble in the disperse phase and migrates to the interface between the disperse phase and the continuous phase, wherein the benefit agent remains in the core after polymerization, a stabilizer system is present in one or both of the disperse phase and the continuous phase, one or both of the disperse phase and the continuous phase comprises an initiator, and the polymer precursor is soluble in the disperse phase and comprises a multifunctional ethylenically unsaturated monomer. wherein the population of capsules comprises a delta fracture strength percentage of 15% to 230% and a mean shell thickness of 20 nm to 400 nm, the population of capsules obtainable by dispersing droplets of a disperse-phase in a continuous phase by passing the disperse phase through a plurality of holes in a membrane, from a first side of the membrane to a second side of the membrane and into the continuous phase, while the continuous phase is flowed across the second side of the membrane and the membrane is mechanically moved, wherein the disperse phase includes a polymer precursor, a process aider, and a benefit agent, and the continuous phase includes water, and upon exiting the plurality of holes on the second side of the membrane, the disperse phase is formed into droplets of disperse phase; and exposing the dispersion of droplets of disperse phase in the continuous phase under conditions sufficient to initiate polymerization of the polymer precursor within the droplets of disperse phase, wherein the polymer precursor becomes insoluble in the disperse phase and migrates to the interface between the disperse phase and the continuous phase, wherein the benefit agent remains in the core after polymerization, a stabilizer system is present in one or both of the disperse phase and the continuous phase, one or both of the disperse phase and the continuous phase comprises an initiator, and the polymer precursor is soluble in the disperse phase and comprises a multifunctional ethylenically unsaturated monomer.