These envelopes are printed with reflex blue ink and open from the top. Large enough to handle keyless remotes, but small enough to fit through the slot in your night drop box. The top flap measures 1.375″ tall and features a most seal gum adhesive which can be licked or have moisture applied to activate the adhesive. Each envelope is flexo printed with vibrant reflex blue ink. 100 per pack. Measures 6″x 9″ Call for a quote on custom.