GoSecure Bubble Lined Envelopes (Pack of 50) Size 9 300x445mm Gold [ML10058] Lightweight and economical, these GoSecure Bubble Lined Envelopes are designed to be impact resistant. With a bubble lined interior and an exterior made from 75gsm MG grade paper, these envelopes are ideal for protecting delicate or fragile items in transit. Featuring a sender address box and a secure peel and seal closure, these size 9 Gold envelopes measure 300x445mm and come in a pack of 50.    Bubble lined interior    Durable 75gsm MG grade paper    Secure peel and seal closure    Size 9: 300x445mm (internal) 320x445mm (external)    Colour: Gold    Pack of 50