Tyvek B4a 330 X 250 X 38 mm Peel And Seal White Gusset

These Tyvek envelopes are made from 100% recyclable, high density polythene fibres (HDPE), which is tear and water resistant for extra security in transit. These envelopes have an expanding 38mm gusset and extra strong hot melt peel and seal closure. These lightweight, flexible envelopes measure 330 x 250mm. This pack contains 100 white envelopes.