The Medtainer is a medical grade plastic storage container with a built in grinder. It is air and water tight and virtually smell proof. The grinder teeth of the Med+ainer are of a unique oblong design. This particular engineering gives you a medium to fine grind. Measuring in at 9cm high and 5 cm wide the Medtainer will fit it your hand very comfortably making it the perfect on the go solution. Now Includes a humidity control pack! - keep your dry herb at the optimal dry/wetness ratio for maximum potency.