The white PET cosmo round bottles are available with black polypropylene disc top caps. The disc top caps allow for a small amount of product to be dispensed when the closure's orifice is exposed. The 2 oz and 4 oz bottles have caps with .270 mm orifices, while the 8 oz and 16 oz bottles come with caps that have .310 mm orifices. These white plastic bottles may be good choices for dispensing bath and body care products such as lotions, shampoos and conditioners, liquid soaps, and more!