  We discuss the stability of strangelets by considering dynamical chiral
symmetry breaking and confinement. We use a $U(3)_{L} \times U(3)_{R}$
symmetric Nambu--Jona-Lasinio model for chiral symmetry breaking supplemented
by a boundary condition for confinement. It is shown that strangelets with
baryon number $A < 2 \times 10^{3}$ can stably exist. For the observables, we
obtain the masses and the charge-to-baryon number ratios of the strangelets.
These quantities are compared with the observed data of the exotic particles.
