7.5" x 11" Black Metallic Bubble Mailers Padded Self Seal Mailing Envelopes Pack of 250 Usable Dimensions: 6.5 x "10.75. Color: Black, Paper Liner: White. Provides excellent protection during shipments. Aluminum Foil with Bubble Lining, Bubble Lining: 3/16. Approved by UPS, FedEx, and USPS.