Glass Stash Jar These glass jars are made of machine blown glass and have a pop-top lid with an airtight gasket seal. You can write on the permanent decal and erase with a damp cloth. The 420 Science pop top jars pride themselves on keeping your stash as fresh as can be. Stash Jar Features: Jar Sizes: Extra Small: 2.99" x 2.25" (Holds: 1/8 oz (3.5 g) | 3 fl oz (89 ml)) Small: 3.25" x 2.5" (Holds: 1/4 oz (7 g) | 3 fl oz (150 ml)) Medium: 4" x 3" (Holds: 1/3 oz (10.0 g) | 7 fl oz (200 ml)) Large: 4.5" x 3.5" (Holds: 1/2 oz (16.0 g) | 10 fl oz (300 ml)) Machine Blown Glass Permanent Glass Decals Glass Lid w/ Airtight Plastic Gasket 420 Jars Lifetime Warranty