Size is as-packaged, or the diameter of loose marbles. ("D" is the diameter of round items other than marbles.)
: 1 x 1 x 7/8"
Transparent acrylic box with a 4x optical magnifying lens built into the top. Protects marbles up to 5/8" from loss while enhancing viewing! These are ideal for housing micro-peewees! They are also fun for storing and viewing any tiny items.