LION side load clear plastic envelopes with velcro type closure. Expanding envelopes with 1-1/6 inch gusset are spacious enough to fit most letter size manila folders. Hook and loop closure allows quick and easy access to your documents and folders. Transparent envelopes give clear view of contents. You can reduce the amount of fading in photos and artwork by safely storing them in these acid free envelopes. Environmentally friendly recyclable envelopes. 6 letter size envelopes / pack.