A three-dimensional printing kit can include a powder bed material including from about 80 wt% to about 99.5 wt% thermoplastic elastomeric particles having a D50 particle size from about 2 µm to about 150 µm and from about 0.5 wt% to about 6 wt% C12-C24 straight-chain alkyl carboxylate. The three-dimensional printing kit can also include a fusing agent including water, organic co-solvent, and a radiation absorber to generate heat from absorbed electromagnetic radiation.