Bubble Mailers PACK OF 50, BOXED: 50pcs metallic silver bubble mailers packed in a box. Outer size 6×8 in; usable inner size 5×7 in for easier packing. HELPS SLOW TEMPERATURE CHANGE: Reflective foil surface plus thick bubble lining helps reduce heat transfer and protect items from bumps, drops and vibrations during transit. Works best when used with ice packs for short-distance shipping. REINFORCED SELF-SEAL ADHESIVE: Strong peel-and-seal strip for fast packing and a secure closure that stays sealed in shipping. WATER-RESISTANT & DURABLE: Foil exterior helps resist moisture and light splashes; reinforced edges help reduce tearing and punctures. MULTI-PURPOSE SHIPPING: Great for small business packaging—skincare, candles, crafts, gifts, snacks and other lightweight items.