When choosing a glass coffee storage jar, here are some factors you may want to consider:

Size: Consider the amount of coffee you will be storing. Choose a jar that can hold the amount of coffee you typically consume within a week or two to ensure maximum freshness.

Material: Glass is a great choice for coffee storage jars as it is non-reactive and won't affect the taste of your coffee. However, make sure the glass is thick and durable enough to withstand the pressure from the coffee beans.

Lid: Look for a jar with a tight-fitting lid to keep your coffee fresh. Airtight lids made of materials like silicone or rubber will prevent moisture and air from entering the jar, which can cause your coffee to go stale.

UV protection: Exposure to sunlight can cause coffee beans to deteriorate quickly. Choose a jar with UV protection to prevent this from happening.

Design: Aesthetics may also be a factor when choosing a coffee storage jar. Consider a design that complements your kitchen décor and personal taste.

Brand and price: Do some research on the brand and price range before making a purchase. Higher-priced jars may offer better quality materials and design, but there are also many affordable options available that will still do a great job at keeping your coffee fresh.

Overall, the most important factors to consider when choosing a glass coffee storage jar are size, material, lid, UV protection, and design. Choose a jar that meets your needs and preferences, and you'll be able to enjoy fresh, flavorful coffee every morning.