Clear Envelope Seals Extra Large 4 Inch Round Envelope Seal Stickers Package Seals Great For Mailing Seals Used on Large Envelopes and Boxes Wafer Seals Can Sub For Clear Sealing Tape 4" INCH LARGE ENVELOPE/PACKAGING SEALS which are transparent and has strong adhesive. Easy to peel and apply from the roll. Apply to large envelopes, product packaging, even birthday and christmas gifts. The simple peel and apply make it better than many forms of clear sealing tape. 500 TOTAL PACKAGE SEALS: You get 500 clear seals on a roll. These adhesive labels come on a white liner with a gap in between each one. Simply peel and apply from the roll. Easy to cary. STRONG MATERIAL: Made of a strong "clear bopp" material, with a standard permanent adhesive. "Permanent" is just the industry standard for "very strong". Will adhere to most everything unless surface is sprayed with special protective coating. IDEAS: Large envelope seals, large product package seals, gift wrapping seals, and take the place of sealing tape. Free Standard Ground Shipping - We are the manufacturer and keep these envelope seals in stock. We try and ship the same day if ordered early enough. If not, we ship the next day as long as it is M - F during business hours. If order placed on the weekend, we ship the following Monday.