S = 6 x 10 inches (25 pieces) M = 4 x 8 inches (100 pieces) L = 6 x 10 inches (100 pieces).With full air bubbles, our bubble mailers can protect your value products from damage caused by external impacts. The inner lining is using gray film, even if there is strong light, the items in the bag cannot be seen. Strong Self Sealing Adhesive: Our padded envelopes is using four-season adhesive, which can maintain strong stickiness throughout the year, even if the weather is very hot or cold. The adhesive is covered with strip, which are easily peel off the strip and seal the bag. Sturdy and Durable Construction: The thicken shipping bags covers with polyethylene material, making them not easily punctured and damaged. The shipping bags features with excellent waterproof and tearing proof effects because of the reinforce sealing on the edge. Weight: 0.64 pounds.