Specification Brand : Stamps.com BulletPoint : Constructed from 18 lb. olefin. Ten times stronger than paper envelopes. Envelopes expand to hold bulky items. Feature self-seal closure. 100 per case. BulletPoint1 : DURABLE PROTECTION: Our bubble mailers provide cushioned protection for your items with thick plastic bubbles. BulletPoint2 : CONVENIENT SIZING: Measuring 8.5x11 inches, the mailers are perfectly sized for shipping smaller items and documents within the US using USPS, UPS or FedEx domestic delivery services. BulletPoint3 : EASY SEALING: The mailers feature a resealable adhesive strip along the top opening for securely sealing packages without additional tape or tools needed. BulletPoint4 : BRIGHT COLOR: The bright color makes the mailers easy to spot on conveyor belts and easy for recipients to recognize their package upon delivery. BulletPoint5 : BULK QUANTITY: This package includes 50 bubble mailers to provide plenty of mailers on hand for shipping smaller items and reducing trips to purchase more individually. Color : White ExternallyAssignedProductIdentifier : 5056847503704 ItemName : Tyvek Expandable Envelopes, 10" x 13" x 2", White, 100/Case ItemPackageDimensions_Height : 6 inches ItemPackageDimensions_Length : 18 inches ItemPackageDimensions_Width : 11 inches ItemShape : Rectangular ItemTypeKeyword : envelope-mailers Manufacturer : Stamps.com Material : Polypropylene (PP) ModelName : PP2-BLU-50 NumberOfItems : 100 Occasion : Business OccasionType : Shipping PackageLevel : unit PartNumber : TYE10132WS ProductDescription : Tyvek envelopes provide superior puncture, tear and moisture protection. ProductSiteLaunchDate : 2025-04-24T04:54:37.190Z RecommendedUsesForProduct : Shipping Size : 10" x 13" x 2" Style : Self-sealing Poly Mailers SupplierDeclaredDgHzRegulation : not_applicable SupplierDeclaredDgHzRegulation1 : not_applicable SupplierDeclaredDgHzRegulation2 : not_applicable SupplierDeclaredHasProductIdentifierExemption : 1 UnitCount : 100 UnspscCode : 44121500