flip top glass bottle

Flip-top glass bottles are offered in several common capacities, typically including about 8.5–9 oz, 17 oz, roughly 33.75–34 oz, and up to about 37.25 oz.

The bottles are made of glass; closures and hardware commonly use metal (including stainless steel) for the clasps, plastic components such as ABS, and rubber or plastic gaskets. Some listings also note BPA-free glass.

Most listings say the glass body is dishwasher-safe. Metal rings, clasps and gaskets or hermetic caps should be hand-washed and thoroughly dried. Some descriptions advise avoiding harsh detergents on the gasket and recommend hand-washing or drying the hardware to preserve the seal.

Swing-top closures use a mechanical clamp or metal clasp that presses a gasket or rubber seal against the bottle opening. The clamp holds the gasket tightly in place to form an airtight, leak-resistant (hermetic) seal that helps lock in freshness and prevent spills.

Some listings advise not using the bottle for carbonated drinks, recommend leaving headspace (about 5 cm / 2 in.) instead of filling to the brim, and note that gaskets may not be suitable for 100% fatty substances.