100 Glamour Red Bright and Shiny Metallic Exterior Padded Bubble Mailers Envelopes Self Sealing Bags 13x17.5 Usable Dimensions: 12" x 17.25". Color: Red, Paper Liner: White. Provides excellent protection during shipments. Aluminum Foil with Bubble Lining, Bubble Lining: 3/16. Approved by UPS, FedEx, and USPS.