These are various quantities of clear / transparent HDPE (High Density Polyethylene) plastic Cosmo Round bottles, also known as Bullet, Imperial, or Jefferson Rounds.. The bottles are Natural/translucent in color, 240 ml or 8 oz capacity, and each one comes with a Fine Mist Pump Sprayer/Atomizer (let us know if you have a preference of black or white colored pump sprayers). The neck size of the bottles is 24-410 These are great to hold hand sanitizer, cosmetics, and many other liquids. Their small size makes them particularly convenient for travel. Orders will be shipped in a padded bubble mailer through USPS First Class and USPS First Class International. Please do not hesitate to contact us with any questions or concerns that you may have.