Smead Poly Envelope, 1-1/4" Expansion, Hook-and-Loop Closure, Side Load, Letter Size, Clear, 5 per Pack (89661) Poly envelopes are a great choice for conveniently storing documents whether on the desk, in the drawer or on the go Hook-and-loop closure for security and portability Durable poly material resists tears and repels moisture, making these envelopes ideal for the home, office or classroom Side loading file envelopes expand to 1-1/4" Includes 5 side load letter size (9-3/4" W x 11-5/8" H) poly envelopes with protective flap and hook-and-loop string tie closure Acid free and PVC free