Product Benefits And Features Perfect for sending all your lightweight and delicate items. These self seal bubble mailers eliminate the need for tape. Flat Size: 4 inch W x 8 inch H Usable Dimension: 3 3/4 inch W x 6 1/4 inch H 500 bubble mailers per case. Lined with 3/16 inch bubble. 100 per cent recycled content (90 per cent post-industrial and 10 per cent post-consumer). Recyclable. Made in the USA