Material and construction - Thickened borosilicate glass with a polypropylene cap and a polyethylene liner inside the top for durability and reliability. Size and capacity - Capacity: 20 ml (0.67 oz) - Dimensions: about 26×57 mm (Dia×H) - Opening diameter: approx 16 mm Portable and easy to use - Small, well-made glass bottles with lids that are easy to carry and designed for on-the-go use - Unbreakable construction for reliable daily use Leak resistance and sealing - Screw-on bottle caps with liners provide a tight seal to prevent leaks during transport and storage Use scenarios - Take cosmetic samples, essential oils, or perfumes on trips for easy testing or sharing - Store travel-size serums, solvents, or other liquids for personal use or quick application - Ideal for laboratory or hobby use to hold small quantities of reagents, pigments, or other liquids This description preserves the original specifications and functions while presenting clear, customer-focused benefits and practical applications.