This is the smallest of the ARRAY pouches at 4 inches long and 3 inches wide. SHORT model is 1 inch deep, TALL is 1.75 inches deep. It has a transparent lid to make it easy to see what's inside. The RED color helps you quickly differentiate between your different sized pouches. A zipper with a red cord pull goes around three sides for access. The outside bottom is covered with Hook Velcro which allows you to attach it to the FLEX ARRAY BASE PLATE.